Impact-resistant poly(arylene ether) resins with improved clarity

ABSTRACT

The present invention is directed to a composition that includes a poly(arylene ether), a radial block copolymer of an alkenyl aromatic monomer and a conjugated diene, a linear block copolymer of an alkenyl aromatic monomer and a conjugated diene, one or more optical enhancing agents, and a hydrocarbon resin. The composition is characterized by at least one of the following properties: a multiaxial impact of at least 20 joules as measured by ASTM D 3763-08, a percent haze of 15 percent or less as measured by ASTM D 1003-00, and a percent transmittance of 75 percent or more as measured by ASTM D 1003-00.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation-in-part of U.S. patent applicationSer. No. 13/153,067, filed Jun. 3, 2011, which is incorporated herein byreference in its entirety.

BACKGROUND OF THE INVENTION

Compositions containing poly(arylene ether)s and styrenic blockcopolymers are known and valued for their improved properties relativeto either resin type alone. For example, U.S. Pat. No. 3,660,531(Lauchlan) describes blends of polyphenylene ethers withstyrene-butadiene block copolymers and teaches that the blends exhibitimproved melt processability and impact resistance without sacrificingthe desirable heat distortion temperature and flexural modulus ofunmodified polyphenylene ether. As another example, U.S. Pat. No.5,234,994 (Shiraki et al.) describes blends of a polyphenylene ether, ablock copolymer of a vinyl aromatic hydrocarbon and a conjugated diene,and polystyrene. The blends are described as offering improvedtransparency, impact resistance, surface hardness, heat resistance, andgloss. As yet another example, U.S. Pat. No. 6,274,670 (Adedeji et al.)describes a composition comprising a polyphenylene ether resin, anon-elastomeric styrenic resin, and an unsaturated elastomeric styrenicblock copolymer. When the non-elastomeric styrenic resin is astyrene-butadiene block copolymer having at least 50 weight percentstyrene, these compositions are semi-transparent and exhibit enhancedprocessability.

Despite these advances, light color, low haze, impact-resistant, andflame-retardant poly(arylene ether)s remain an elusive target. Althoughoptical enhancing agents along with flame-retardants can give resinswith improved clarity and less haze, they also lead to resins withreduced impact resistance scores relative to resins without theseadditives.

There is therefore a need in the packaging and healthcare industries,among others, for poly(arylene ether) blends that exhibit an improvedbalance of optical clarity and impact resistance.

SUMMARY OF THE INVENTION

Resins with both high levels of optical clarity and impact resistancecan be prepared using impact modifiers, even in the presence of otheradditives that are known to reduce impact resistance. The impactmodifiers include a radial block copolymer and a linear block copolymer.The additional use of hydrogenated hydrocarbon or terpene resins in theblends resulted in significant improvement in multiaxial impact scoreseven in the presence of other additives such as benzoin, tridecylphosphite, and resorcinol bis(diphenyl phosphate), and maintained lowlevels of haze and high percents of light transmittance in the productresins. Thus, the present invention is directed to a compositioncomprising:

(a) a poly(arylene ether);

(b1) a radial block copolymer of an alkenyl aromatic monomer and aconjugated diene; wherein the radial block copolymer has about 50 toabout 70 weight percent of repeating units derived from the alkenylaromatic monomer and a number average molecular weight of about 50,000to about 70,000 atomic units;

(b2) a linear block copolymer of an alkenyl aromatic monomer and aconjugated diene; wherein the linear block copolymer has about 55 toabout 70 weight percent of repeating units derived from the alkenylaromatic monomer; wherein the ratio of (b1) to (b2) is 0.5:1 to 4:1;

(c) one or more optical enhancing agents; and

(d) a hydrocarbon resin selected from the group consisting ofhydrogenated alicyclic hydrocarbon resins and hydrogenated terpeneresins;

wherein the composition is characterized by at least one of thefollowing properties:

-   -   (i) a multiaxial impact of at least 20 J as measured by ASTM D        3763-08;    -   (ii) a percent haze of 15 percent or less as measured by ASTM D        1003-00; and    -   (iii) a percent transmittance of 75 percent or more as measured        by ASTM D 1003-00.

The invention is further directed to processes for making suchcompositions, and for articles that are formed from such compositions.

DETAILED DESCRIPTION OF THE INVENTION

All cited patents, patent applications, and other references areincorporated herein by reference in their entirety. However, if a termin the present application contradicts or conflicts with a term in theincorporated reference, the term from the present application takesprecedence over the conflicting term from the incorporated reference.All ranges disclosed herein are inclusive of the endpoints, and theendpoints are independently combinable with each other. The use of theterms “a” and “an” and “the” and similar referents in the context ofdescribing the invention (especially in the context of claims) are to beconstrued to cover both the singular and the plural, unless otherwiseindicated herein or clearly contradicted by context. It should furtherbe noted that the terms “first,” “second,” and the like herein do notdenote any order, quantity, or importance, but rather are used todistinguish one element from another. The modifier “about” used inconnection with a quantity is inclusive of the stated value and has themeaning dictated by the context (that is, it includes the degree oferror associated with measurement of the particular quantity). As usedherein weight percents are based on a 100 weight percent composition.

Components

(a) Poly(arylene ether)

The composition comprises a poly(arylene ether). In some embodiments,the poly(arylene ether) used to form the composition comprises repeatingstructural units of the formula

wherein for each structural unit, each Z¹ is independently halogen,unsubstituted or substituted C₁-C₁₂ hydrocarbyl with the proviso thatthe hydrocarbyl group is not tertiary hydrocarbyl, C₁-C₁₂hydrocarbylthio, C₁-C₁₂ hydrocarbyloxy, or C₂-C₁₂ halohydrocarbyloxywherein at least two carbon atoms separate the halogen and oxygen atoms;and each Z² is independently hydrogen, halogen, unsubstituted orsubstituted C₁-C₁₂ hydrocarbyl with the proviso that the hydrocarbylgroup is not tertiary hydrocarbyl, C₁-C₁₂ hydrocarbylthio, C₁-C₁₂hydrocarbyloxy, or C₂-C₁₂ halohydrocarbyloxy wherein at least two carbonatoms separate the halogen and oxygen atoms.

As used herein, the term “hydrocarbyl”, whether used by itself, or as aprefix, suffix, or fragment of another term, refers to a residue thatcontains only carbon and hydrogen. The residue can be aliphatic oraromatic, straight-chain, cyclic, bicyclic, branched, saturated, orunsaturated. It can also contain combinations of aliphatic, aromatic,straight chain, cyclic, bicyclic, branched, saturated, and unsaturatedhydrocarbon moieties. However, when the hydrocarbyl residue is describedas “substituted”, it can contain heteroatoms over and above the carbonand hydrogen members of the substituent residue. Thus, when specificallydescribed as substituted, the hydrocarbyl residue can also containhalogen atoms, nitro groups, cyano groups, carbonyl groups, carboxylicacid groups, ester groups, amino groups, amide groups, sulfonyl groups,sulfoxyl groups, sulfonamide groups, sulfamoyl groups, hydroxyl groups,alkoxyl groups, or the like, and it can contain heteroatoms within thebackbone of the hydrocarbyl residue.

The poly(arylene ether) can comprise molecules havingaminoalkyl-containing end group(s), typically located in an orthoposition to the hydroxy group. Also frequently present aretetramethyldiphenoquinone (TMDQ) end groups, typically obtained fromreaction mixtures in which tetramethyldiphenoquinone by-product ispresent. In some embodiments the poly(arylene ether) comprises TMDQ endgroups in an amount of less than 5 weight percent, specifically lessthan 3 weight percent, more specifically less than 1 weight percent,based on the weight of the poly(arylene ether). In some embodiments, thepoly(arylene ether) comprises, on average, about 0.7 to about 2 moles,specifically about 1 to about 1.5 moles, of chain-terminal hydroxylgroups per mole of poly(arylene ether).

The poly(arylene ether) can be in the form of a homopolymer, acopolymer, a graft copolymer, an ionomer, or a block copolymer, as wellas combinations comprising at least one of the foregoing. Poly(aryleneether) includes polyphenylene ether comprising2,6-dimethyl-1,4-phenylene ether units optionally in combination with2,3,6-trimethyl-1,4-phenylene ether units. In some embodiments, thepoly(arylene ether) is an unfunctionalized poly(arylene ether). Anunfunctionalized poly(arylene ether) is a poly(arylene ether) consistingof the polymerization product of one or more phenols. The term“unfunctionalized poly(arylene ether)” excludes functionalizedpoly(arylene ether)s such as acid-functionalized poly(arylene ether)sand anhydride-functionalized poly(arylene ether)s. In some embodiments,the poly(arylene ether) comprises a poly(2,6-dimethyl-1,4-phenyleneether).

The poly(arylene ether) can be prepared by the oxidative coupling ofmonohydroxyaromatic compound(s) such as 2,6-xylenol and/or2,3,6-trimethylphenol. Catalyst systems are generally employed for suchcoupling. They can contain heavy metal compounds such as copper,manganese, or cobalt compounds, usually in combination with one or moreligands such as a primary amine, a secondary amine, a tertiary amine, ahalide, or a combination of two or more of the foregoing.

In some embodiments, the poly(arylene ether) has an intrinsic viscosityof about 0.2 to about 1.0 deciliter per gram, as measured by Ubbelohdeviscometer in chloroform at 25° C. In some embodiments, the poly(aryleneether) has an intrinsic viscosity of about 0.3 to about 0.6 deciliterper gram. When the poly(arylene ether) is apoly(2,6-dimethyl-1,4-phenylene ether), the intrinsic viscosity range ofabout 0.3 to about 0.6 deciliter per gram can correspond to a numberaverage molecular weight range of about 16,000 to about 25,000 atomicmass units.

In some embodiments, the composition comprises less than or equal to 2weight percent, specifically less than or equal to 1 weight percent,more specifically less than or equal to 0.5 weight percent, of apoly(arylene ether)-polysiloxane block copolymer. In some embodiments,the composition excludes poly(arylene ether)-polysiloxane blockcopolymer. Poly(arylene ether)-polysiloxane block copolymers, whichcomprise at least one poly(arylene ether) block and at least onepolysiloxane block, are described, for example, in U.S. PatentApplication Publication No. US 2010/0139944 A1 (Guo et al.).

In some embodiments, the poly(arylene ether) is characterized by aweight average molecular weight and a peak molecular weight, wherein aratio of the weight average molecular weight to the peak molecularweight is about 1.3:1 to about 4:1. Within this range, the ratio can beabout 1.5:1 to about 3:1, specifically about 1.5:1 to about 2.5:1, morespecifically about 1.6:1 to about 2.3:1, still more specifically 1.7:1to about 2.1:1. As used herein, the term “peak molecular weight” isdefined as the most commonly occurring molecular weight in the molecularweight distribution. In statistical terms, the peak molecular weight isthe mode of the molecular weight distribution. In practical terms, whenthe molecular weight is determined by a chromatographic method such asgel permeation chromatography, the peak molecular weight is thepoly(arylene ether) molecular weight of the highest point in a plot ofmolecular weight on the x-axis versus absorbance on the y-axis.

In some embodiments, the poly(arylene ether) is essentially free ofincorporated diphenoquinone residues. “Diphenoquinone residues” meansthe dimerized moiety that may form in the oxidative polymerizationreaction giving rise to the poly(arylene ethers) contemplated for use inthe present invention. As described in U.S. Pat. No. 3,306,874 (Hay),synthesis of poly(arylene ether)s by oxidative polymerization ofmonohydric phenols yields not only the desired poly(arylene ether) butalso a diphenoquinone side product. For example, when the monohydricphenol is 2,6-dimethylphenol, 3,3′,5,5′-tetramethyldiphenoquinone (TMDQ)is generated. Typically, the diphenoquinone is “re-equilibrated” intothe poly(arylene ether) (i.e., the diphenoquinone is incorporated intothe poly(arylene ether) structure) by heating the polymerizationreaction mixture to yield a poly(arylene ether) comprising terminal orinternal diphenoquinone residues. As used herein, “essentially free”means that fewer than 1 weight percent of poly(arylene ether) moleculescomprise the residue of a diphenoquinone as measured by nuclear magneticresonance spectroscopy (NMR) (Mole of TMDQ×Molecular Weight of unitTMDQ)/(Mole of Polymer×Number Average Molecular Weight (Mn)). In someembodiments, fewer than 0.5 weight percent of poly(arylene ether)molecules comprise the residue of a diphenoquinone.

For example, as shown in the following Scheme, when a poly(aryleneether) is prepared by oxidative polymerization of 2,6-dimethylphenol toyield poly(2,6-dimethyl-1,4-phenylene ether) and3,3′,5,5′-tetramethyldiphenoquinone, reequilibration of the reactionmixture can produce a poly(arylene ether) with terminal and internalresidues of incorporated diphenoquinone.

However, such re-equilibration reduces the molecular weight of thepoly(arylene ether) (e.g., p and q+r are less than n). Accordingly, whena higher molecular weight and stable molecular weight poly(aryleneether) is desired, it may be desirable to separate the diphenoquinonefrom the poly(arylene ether) rather than re-equilibrating thediphenoquinone into the poly(arylene ether) chains. Such a separationcan be achieved, for example, by precipitation of the poly(aryleneether) in a solvent or solvent mixture in which the poly(arylene ether)is insoluble and the diphenoquinone is soluble with very minimum timebetween end of reaction and precipitation.

For example, when a poly(arylene ether) is prepared by oxidativepolymerization of 2,6-dimethylphenol in toluene to yield a toluenesolution comprising poly(2,6-dimethyl-1,4-phenylene ether) and3,3′,5,5′-tetramethyldiphenoquinone, a poly(2,6-dimethyl-1,4-phenyleneether) essentially free of diphenoquinone can be obtained by mixing 1volume of the toluene solution with about 1 to about 4 volumes ofmethanol or methanol water mixture. Alternatively, the amount ofdiphenoquinone side-product generated during oxidative polymerizationcan be minimized (e.g., by initiating oxidative polymerization in thepresence of less than 10 weight percent of the monohydric phenol andadding at least 95 weight percent of the monohydric phenol over thecourse of at least 50 minutes), and/or the re-equilibration of thediphenoquinone into the poly(arylene ether) chain can be minimized(e.g., by isolating the poly(arylene ether) no more than 200 minutesafter termination of oxidative polymerization). These approaches aredescribed in International patent application Ser. No. 12/255,694,published as United States Published Application 2009/0211967 (Delsmanet. al.). Alternatively, diphenoquinone amounts can be achieved byremoving the TMDQ formed during polymerization by filtration,specifically after stopping the oxygen feed into the polymerizationreactor.

In some embodiments, the poly(arylene ether) is a poly(phenylene ether).

(b) Radial Block Copolymer (b1) and Linear Block Copolymer (b2)

In addition to the poly(arylene ether), the composition comprises aradial block copolymer and a linear block copolymer, both of which maybe hydrogenated.

The radial and linear block copolymers may both be prepared from analkenyl aromatic monomer and a conjugated diene.

(b1) Radial Block Copolymer (b1)

As used herein, the term “radial block copolymer” refers to a branchedpolymer comprising poly(conjugated diene) blocks, poly(alkenyl aromatic)blocks, and the residue of a coupling agent that acts as a branchingpoint or radius of the radial block copolymer. More particularly, in theradial block copolymer structure, multiple chains of the poly(conjugateddiene) polymer, usually three or more, are each covalently bound at oneend to the residue of a coupling agent and covalently bound at the otherend to a block of the poly(alkenyl aromatic). In some embodiments, theradial block copolymer consists of the poly(conjugated diene) blocks,the poly(alkenyl aromatic) blocks, and the residue of the couplingagent. For example, the radial block copolymer may exclude residuesderived from other polymerizable monomers.

The alkenyl aromatic monomer used to form the radial block copolymer mayhave the structure

wherein R¹ and R² each independently represent a hydrogen atom, a C₁-C₈alkyl group, or a C₂-C₈ alkenyl group; R³ and R⁷ each independentlyrepresent a hydrogen atom, a C₁-C₈ alkyl group, a chlorine atom, or abromine atom; and R⁴-R⁶ each independently represent a hydrogen atom, aC₁-C₈ alkyl group, or a C₂-C₈ alkenyl group; or R³ and R⁴ are takentogether with the central aromatic ring to form a naphthyl group, or R⁴and R⁵ are taken together with the central aromatic ring to form anaphthyl group. Suitable alkenyl aromatic monomers include, for example,styrene, chlorostyrenes such as p-chlorostyrene, methylstyrenes such asalpha-methylstyrene and p-methylstyrene, and combinations thereof. Insome embodiments, the alkenyl aromatic monomer is styrene.

The conjugated diene used to form the radial block copolymer may be, forexample, 1,3-butadiene, 2-methyl-1,3-butadiene, 2-chloro-1,3-butadiene,2,3-dimethyl-1,3-butadiene, 1,3-pentadiene, 1,3-hexadiene, andcombinations thereof. In some embodiments, the conjugated diene is1,3-butadiene. In some embodiments, the conjugated diene is2-methyl-1,3-butadiene (isoprene).

The coupling agent may be any compound capable of joining at least threeblock copolymers. Examples of such compounds are multivinyl aromaticcompounds; multiepoxide compounds (including epoxidized soybean oils);multiisocyanate compounds; multiimine compounds; multialdehydecompounds; multiketone compounds; multihalides; multianhydridecompounds; and multiester compounds. The amount of coupling agent istypically about 0.1 to about 1 weight percent based on the weight of thetotal composition.

The radial block copolymer has about 50 to about 70 weight percent ofrepeating units derived from the alkenyl aromatic monomer. Within thisrange, the alkenyl aromatic content can be 65 to 70 weight percent.Poly(alkenyl aromatic) content can be determined by proton nuclearmagnetic resonance spectroscopy (¹H NMR).

The radial block copolymer has a number average molecular weight ofabout 50,000 to about 70,000 atomic mass units. Within this range, thenumber average molecular weight can be 57,000 to 67,000 atomic massunits. In some embodiments, the radial block copolymer has a weightaverage molecular weight of 130,000 to 170,000 atomic mass units,specifically 140,000 to 160,000 atomic mass units. In some embodiments,the radial block copolymer has a polydispersity (weight averagemolecular weight divided by number average molecular weight) of 1.94 to2.98.

A gel permeation chromatography method for determining the molecularweight characteristics is as follows. A 20 milligram sample of blockcopolymer is dissolved in 20 milliliters chloroform with 2 parts perthousand by weight toluene (as a flow marker). After the block copolymeris dissolved, the sample is ready to be analyzed by gel permeationchromatography with detection at 254 nanometers. The chromatographyequipment includes a Hewlett Packard HPLC 1100 series chromatographequipped with a PL gel 5 micrometer*10³ Å column, a PL gel 5micrometer*10⁵ Å column, and a 500 Å Styragel packing pre-column. Thecolumns are maintained at 35° C. during the analysis. The injectionvolume is 75 microliters, and injection samples are pre-filtered througha 0.45 micrometer “greenband” filter. The eluent is chloroform and therun time is 16 minutes. Data in the polystyrene molecular weight rangeof 2,000 to 1,000,000 atomic mass units (AMU) is used to calculatevalues of number average molecular weight and weight average molecularfor the block copolymers. The analysis is calibrated with polystyrenemonodisperse calibration standards, such as Polymer LaboratoriesEasivial Standards Part No. PL12541A.

In some embodiments, the radial block copolymer is not hydrogenated.(“unhydrogenated”). Specifically, residual aliphatic unsaturation in thepoly(conjugated diene) block resulting from polymerization of theconjugated diene is not reduced by hydrogenation.

In some embodiments, the radial block copolymer is less than 5 percentcrosslinked, based on the total number of aliphatic carbon-carbon doublebonds in the radial block copolymer. Specifically, the radial blockcopolymer is not intentionally crosslinked by treatment with radiationor chemical agents capable of forming covalent crosslinks between thepoly(conjugated diene) blocks of different radial block copolymermolecules.

Methods of preparing radial block copolymers are known in the art andinclude the methods described in, for example, U.S. Pat. No. 3,281,383(Zelinski et al.), U.S. Pat. No. 3,639,517 (Kitchen et al.), U.S. Pat.No. 4,180,530 (Bi et al.), and U.S. Pat. No. 6,127,487 (Ahmed et al).Radial block copolymers are also commercially available as K-Resin fromChevron Phillips Chemical Company, including KK38, KR01, KR03, and KR05.

In some embodiments, the radial block copolymer has a polystyrenecontent of 65 to 70 weight percent, a polybutadiene content of 30 to 35weight percent, a number average molecular weight of 57,000 to 67,000atomic mass units, a weight average molecular weight of 130,000 to170,000 atomic mass units, and a polydispersity of 1.94 to 2.98. In someembodiments, this radial block copolymer comprises a first polystyreneblock with a first number average molecular weight and a secondpolystyrene block with a second number average molecular weight that isat least two times the first number average molecular weight. Radialblock copolymers described in this paragraph can be prepared accordingto the method of U.S. Pat. No. 3,281,383 to Kitchen et al. In someembodiments, the radial block copolymer has 20 to 30 weight percent ofthe residue of 1,4-addition of butadiene, and 2 to 12 weight percent ofthe residue of 1,2-addition of butadiene (both based on the weight ofthe radial block copolymer), and a ratio of 1,4-addition to 1,2-additionof 2.5:1 to 5:1. In some embodiments of the radial block copolymer,among the residue of 1,4-addition of butadiene the ratio of cis to transdouble bonds is 1:1 to 2:1. A suitable example of such a radial blockcopolymer is K-RESIN KK38 from Chevron Phillips, having a polystyrenecontent of about 68 weight percent, a polybutadiene content of about 32weight percent, a number average molecular weight of about 63,000, aweight average molecular weight of about 149,000, a polydispersity ofabout 2.4, and a melt flow rate of about 9 grams per 10 minutes measuredat 200° C. and 5 kilograms load according to ASTM D1238-10. K-RESIN KK38has about 25 weight percent of the residue of 1,4-addition of butadiene,and about 7 weight percent of the residue of 1,2-addition of butadiene,corresponding to a ratio of 1,4-addition to 1,2-addition of about 3.6:1.Among the residue of 1,4-addition of butadiene, the ratio of cis totrans double bonds is about 1.4:1. The weight percents of residues of1,2-addition of butadiene and 1,4-addition of butadiene, as well as theratio of cis to trans double bonds in the residue of 1,4-addition ofbutadiene, can be determined by ¹H NMR.

(b2) Linear Block Copolymer (b2)

The alkenyl aromatic monomer used to prepare the linear block copolymercan have the same structure as the radial block copolymer. Theconjugated diene used to prepare the hydrogenated block copolymer can bethe same as provided for the radial block copolymer. Suitable conjugateddienes include, for example, 1,3-butadiene, 2-methyl-1,3-butadiene,2-chloro-1,3-butadiene, 2,3-dimethyl-1,3-butadiene, 1,3-pentadiene,1,3-hexadiene, and the like, and combinations thereof. In someembodiments, the conjugated diene is 1,3-butadiene,2-methyl-1,3-butadiene, or a combination thereof. In some embodiments,the conjugated diene consists of 1,3-butadiene.

The linear block copolymer is a copolymer comprising (A) at least oneblock derived from an alkenyl aromatic compound and (B) at least oneblock derived from a conjugated diene, in which the aliphaticunsaturated group content in the block B is at least partially reducedby hydrogenation. In some embodiments, the aliphatic unsaturation in theB block is reduced by about 55 percent to about 70 percent. Thearrangement of blocks A and B includes a linear structure. Linear blockcopolymers include tapered linear structures and non-tapered linearstructures. In some embodiments, the linear block copolymer has atapered linear structure. In some embodiments, the linear blockcopolymer has a non-tapered linear structure. In some embodiments, thelinear block copolymer comprises a B block that comprises randomincorporation of alkenyl aromatic monomer. Linear block copolymerstructures include diblock (A-B block), triblock (A-B-A block or B-A-Bblock), tetrablock (A-B-A-B block), and pentablock (A-B-A-B-A block orB-A-B-A-B block) structures as well as linear structures containing 6 ormore blocks in total of A and B, wherein the molecular weight of each Ablock may be the same as or different from that of other A blocks, andthe molecular weight of each B block may be the same as or differentfrom that of other B blocks. In some embodiments, the linear blockcopolymer is a diblock copolymer, a triblock copolymer, or a combinationthereof.

In some embodiments, the linear block copolymer excludes the residue ofmonomers other than the alkenyl aromatic compound and the conjugateddiene. In some embodiments, the hydrogenated block copolymer consists ofblocks derived from the alkenyl aromatic compound and the conjugateddiene. It does not comprise grafts formed from these or any othermonomers. It also consists of carbon and hydrogen atoms and thereforeexcludes heteroatoms.

In some embodiments, the linear block copolymer includes the residue ofone or more acid functionalizing agents, such as maleic anhydride.

In some embodiments, the linear block copolymer comprises apolystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer.

In some embodiments, the linear block copolymer comprises apolystyrene-poly(ethylene-butylene-styrene)-polystyrene triblockcopolymer.

In some embodiments, the linear block copolymer comprises apolystyrene-poly(ethylene-butylene-styrene)-polystyrene triblockcopolymer and a polystyrene-poly(ethylene-butylene)-polystyrene triblockcopolymer.

In some embodiments, the linear block copolymer is a block copolymer ofan alkenyl aromatic monomer and a conjugated diene, wherein the linearblock copolymer has about 55 to about 70 weight percent of repeatingunits derived from the alkenyl aromatic monomer.

In some embodiments, the linear block copolymer is apolystyrene-poly(ethylene-butylene)-polystyrene triblock copolymerhaving about 65 to about 70 weight percent of repeating units derivedfrom styrene. An example of such a linear block copolymer is AsahiTUFTEC H1043. In some embodiments, the ratio of (b1) to (b2) is from1.5:1 to 2.5:1.

In some embodiments, the radial block copolymer is a block copolymer ofstyrene and butadiene having about 65 to about 70 weight percent ofrepeating units derived from styrene (e.g., Chevron Phillips KK38), andthe linear block copolymer is apolystyrene-poly(ethylene-butylene)-polystyrene triblock copolymerhaving about 65 to about 70 weight percent of repeating units derivedfrom styrene (e.g., Asahi TUFTEC H1043).

In some embodiments, the weight percent of (b1) in the composition ofthe invention is less than the weight percent of (b2). In otherembodiments, the weight percent of (b1) in the composition of theinvention is greater than the weight percent of (b2).

In some embodiments, the ratio of (b1) in the composition to (b2) is0.5:1 to 4:1. In some embodiments, the weight percent ratio of (b1) inthe composition to (b2) is 1:1 to 3:1. In other embodiments, the weightpercent ratio of (b1) in the composition to (b2) is 1.5:1 to 2.5:1. Inother embodiments, the weight percent ratio of (b1) in the compositionto (b2) is 1.75:1 to 2.25:1. In other embodiments, the weight percentratio of (b1) in the composition to (b2) is 1.9:1 to 2.1:1. In otherembodiments, the weight percent ratio of (b1) in the composition to (b2)is 2:1.

(c) Optical Enhancing Agent

The optical properties of the composition comprising the poly(aryleneether) and block copolymers may be enhanced by the addition of certainadditives. Thus, the composition may also comprise at least one opticalenhancing agent. The optical enhancing agent, which decolorizes thecomposition, is selected from the group consisting ofalpha-hydroxyketones, unsubstituted or substituted trihydrocarbylphosphites, and carboxylic acid compounds of formula (I), (II), or (III)

and their hydrates and anhydrides, wherein R¹, R², R³, R⁴, R⁵, R⁶, R⁷,and R⁸ are each independently selected from the group consisting ofhydrogen and C₁-C₁₂ hydrocarbyl optionally substituted with one or moresubstituents selected from hydroxy (—OH), ketone (—C(═O)—), ethericoxygen (—O—), and carboxylic acid (—CO₂H). The optional divalent ketoneand etheric oxygen substituents may be incorporated into the backbone orsubstituents of formulae (I), (II), or (III).

Alpha-hydroxyketones have the general formula

wherein R⁹ is C₁-C₁₂ hydrocarbyl, optionally substituted with hydroxy orketone groups; and R¹⁰ is hydrogen or C₁-C₁₂ hydrocarbyl, optionallysubstituted with hydroxy or ketone groups. Suitable alpha-hydroxyketonesinclude, for example, hydroxyacetone (1-hydroxy-2-propanone; ChemicalAbstracts Service (CAS) Reg. No. 116-09-6), acetoin(3-hydroxy-2-butanone; CAS Reg. No. 513-86-0), 2-hydroxyacetophenone(CAS Reg. No. 528-24-1), benzoin (2-hydroxy-2-phenylacetophenone, CASReg. No. 119-53-9), 2-hydroxy-1-phenyl-2-p-tolyl-ethanone (CAS Reg. No.2431-02-9), and the like, and combinations thereof.

Trihydrocarbyl phosphites may have the general structure P(OR¹¹)₃,wherein each occurrence of R¹¹ is independently C₁-C₁₈ hydrocarbyl. Insome embodiments, each R¹¹ is independently C₆-C₁₈ alkyl. Suitabletrihydrocarbyl phosphites include, for example, trioctyl phosphite,tridecyl phosphite (TDP), tridodecyl phosphite, phenyl didecylphosphite, decyl diphenyl phosphite, triphenyl phosphite, tritolylphosphites, and the like, and combinations thereof. Suitabletrihydrocarbyl phosphites further include spiro diphosphites such as,for example,3,9-bis[2,4-bis(1,1-dimethylethyl)phenoxy]-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane(CAS Reg. No. 26741-53-7; commercially available from Ciba under thetrade name IRGAFOS 126).

As mentioned and depicted above, the carboxylic acid compounds includethose having formula (I), (II), or (III) and their hydrates andanhydrides, wherein R¹, R², R³, R⁴, R⁵, R⁶, R⁷, and R⁸ are eachindependently selected from the group consisting of hydrogen and C₁-C₁₂hydrocarbyl optionally substituted with one or more substituentsselected from hydroxy, ketone, etheric oxygen, and carboxylic acid.Suitable carboxylic acid compounds include, for example, aconitic acid(CAS Reg. No. 499-12-7), agaricic acid (CAS Reg. No. 666-99-9), citricacid (CAS Reg. No. 77-92-9), citraconic acid (CAS Reg. No. 498-23-7),fumaric acid (CAS Reg. No. 110-17-8), itaconic anhydride (CAS Reg. No.2170-03-8), malic acid (CAS Reg. No. 6915-15-7), maleic acid (CAS Reg.No. 110-16-7), and the like, and combinations thereof.

In some embodiments, the composition comprises at least one of benzoin,citric acid, and TDP. In some embodiments, the composition comprisesbenzoin and TDP.

(d) Hydrocarbon Resin

The composition of the present invention also includes a flow promoter.In one embodiment, the flow promoter is an alicyclic hydrocarbon resin.Particularly useful are low molecular weight hydrocarbon resins derivedfrom unsaturated C₅ to C₉ monomers. Non-limiting examples include cyclicolefins and diolefins, e.g. cyclopentene, cyclopentadiene, cyclohexene,cyclohexadiene, methyl cyclopentadiene and the like; and cyclic diolefindienes, e.g., dicyclopentadiene, methylcyclopentadiene dimer and thelike. The resins can additionally be partially or fully hydrogenated.Exemplary commercial low molecular weight hydrocarbon resins may includethe following: hydrocarbon resins available from Eastman Chemical underthe trademark Piccotac®; the fully hydrogenated alicyclic hydrocarbonresin based on C₉ monomers available from Arakawa Chemical Inc. underthe trademark Arkon® and sold, depending on softening point, as Arkon®P140, P125, P115, P100, P90, P70 or the partially hydrogenatedhydrocarbon resins sold as Arkon® M135, M115, M100 and M90; the fully orpartially hydrogenated hydrocarbon resin available from Eastman Chemicalunder the tradename Regalite® and sold, depending on softening point, asRegalite® R1100, S1100, R1125, R1090 and R1010, or the partiallyhydrogenated resins sold as Regalite® R7100, R9100, S5100 and S7125; thehydrocarbon resins available from Exxon Chemical under the tradeEscorez®, sold as the Escorez® 1000, 2000 and 5000 series, based on C₅to C₉ feedstock and mixes thereof, or the hydrocarbon resins sold as theEscorez® 5300, 5400, and 5600 series based on cyclic and C₉ monomers,optionally hydrogenated.

In some embodiments, the hydrocarbon resin has a softening point ofabout 120 to about 155° C. measured according to ASTM E28-99 (2009).

In particular embodiments, the flow promoter is an alicyclichydrogenated hydrocarbon resin having a softening point of about 120 toabout 145° C. measured according to ASTM E28-99 (2009). Suitableexamples of such resins are available under the trade name Arkon®,available from Arakawa Chemical Industries, Ltd., including Arkon P-125and Arkon P-140.

In another embodiment, the flow promoter is a hydrogenated terpeneresin. Such hydrogenated terpene resins include Clearon P, M, and Kresins produced by Yasuhara Chemical Co., Ltd. In some embodiments, thehydrogenated terpene resin has a softening point of about 145 to about155° C. measured according to ASTM E28-99 (2009). An example of such ahydrogenated terpene resins is Clearon P-150 produced by YasuharaChemical Co., Ltd.

(e) Flame Retardants

The composition optionally contains a flame retardant. Exemplaryflame-retardant additives are desirably present in an amount at leastsufficient to reduce the flammability of the polyester resin, preferablyto a Underwriters Laboratory 94 (UL94) V-0 rating. The amount will varywith the nature of the resin and with the efficiency of the additive. Ingeneral, however, the amount of additive will be from 2 to 30 percent byweight.

Typical flame-retardants include halogenated flame retardants such astetrabromobisphenol-A polycarbonate oligomer, polybromophenyl ether,brominated polystyrene, brominated BPA polyepoxide, brominated imides,brominated polycarbonate, poly(haloaryl acrylate), poly(haloarylmethacrylate), or mixtures thereof.

Examples of other suitable flame retardants are brominated polystyrenessuch as polydibromostyrene and polytribromostyrene, decabromobiphenylethane, tetrabromobiphenyl, brominated alpha,omega-alkylene-bis-phthalimides, e.g.N,N′-ethylene-bis-tetrabromophthalimide, poly(pentabromobenzyl)acrylate,oligomeric brominated carbonates, especially carbonates derived fromtetrabromobisphenol A, which, if desired, are end-capped with phenoxyradicals, or with brominated phenoxy radicals, or brominated epoxyresins.

The halogenated flame retardants are typically used with a synergist,particularly inorganic antimony compounds. Such compounds are widelyavailable or can be made in known ways. Typical, inorganic synergistcompounds include Sb₂O₅, Sb₂S₃, sodium antimonate and the like.Especially preferred is antimony trioxide (Sb₂O₃). Synergists, such asantimony oxides, are typically used at about 0.5 to 15 by weight basedon the weight percent of resin in the final composition.

In some embodiments, the composition comprises a flame retardantselected from the group consisting of an organophosphate ester, a metaldialkyl phosphinate, a nitrogen-containing flame retardant, metalhydroxides and mixtures thereof.

Exemplary organophosphate ester flame retardants include, but are notlimited to, phosphate esters comprising phenyl groups, substitutedphenyl groups, or a combination of phenyl groups and substituted phenylgroups, bis-aryl phosphate esters based upon resorcinol such as, forexample, resorcinol bis(diphenyl phosphate), as well as those based uponbis-phenols such as, for example, bisphenol A bis(diphenyl phosphate).In some embodiments, the organophosphate ester is selected fromtris(alkylphenyl) phosphate (for example, CAS No. 89492-23-9 or CAS No.78-33-1), resorcinol bis(diphenyl phosphate) (for example, CAS No.57583-54-7), bisphenol A bis(diphenyl phosphate) (for example, CAS No.181028-79-5), triphenyl phosphate (for example, CAS No. 115-86-6),tris(isopropylphenyl) phosphate (for example, CAS No. 68937-41-7), andmixtures of two or more of the foregoing organophosphate esters.

In some embodiments the organophosphate ester comprises a bis-arylphosphate of Formula IV:

wherein R, R⁵ and R⁶ are independently at each occurrence an alkyl grouphaving 1 to 5 carbons and R¹-R⁴ are independently an alkyl, aryl,arylalkyl or alkylaryl group having 1 to 10 carbons; n is an integerequal to 1 to 25; and s1 and s2 are independently an integer equal to 0to 2. In some embodiments OR % OR², OR³ and OR⁴ are independentlyderived from phenol, a monoalkylphenol, a dialkylphenol or atrialkylphenol.

As readily appreciated by one of ordinary skill in the art, the bis-arylphosphate is derived from a bisphenol. Exemplary bisphenols include2,2-bis(4-hydroxyphenyl)propane (so-called bisphenol A),2,2-bis(4-hydroxy-3-methylphenyl)propane, bis(4-hydroxyphenyl)methane,bis(4-hydroxy-3,5-dimethylphenyl)methane and1,1-bis(4-hydroxyphenyl)ethane. In some embodiments, the bisphenolcomprises bisphenol A.

Organophosphate esters can have differing molecular weights making thedetermination of the amount of different organophosphate esters used inthe thermoplastic composition difficult. In some embodiments, the amountof phosphorus, as the result of the organophosphate ester, is 0.8 weightpercent to 1.2 weight percent with respect to the total weight of thecomposition.

The amount of the flame retardant, when present in the thermoplasticcomposition, is sufficient for the covered conductor to pass therelevant flame retardance standard to the type of covered conductor. Forexample, when the covered conductor is an covered conductor the amountof flame retardant is sufficient for the covered conductor to have aflame out time less than or equal to 70 seconds, when tested accordingto the flame propagation procedure contained in the InternationalOrganization for Standardization (ISO) 6722.

In some embodiments, the flame retardant comprises an organophosphateester present in an amount of 5 to 30 weight percent weight percent,with respect to the total weight of the composition. Within this rangethe amount of organophosphate ester can be greater than or equal to 7weight percent, or more specifically, greater than or equal to 10 weightpercent. Also within this range the amount of organophosphate ester canbe less than or equal to 25 weight percent, or, more specifically, lessthan or equal to 20 weight percent.

(f) Other Additives

The composition may optionally further comprise one or more additives.Such additives include, for example, stabilizers, mold release agents,processing aids, flame retardants, drip retardants, nucleating agents,UV blockers, dyes, pigments, antioxidants, anti-static agents, blowingagents, mineral oil, metal deactivators, antiblocking agents, and thelike, and combinations thereof. Additives may be added in amounts thatdo not unacceptably detract from the desired physical properties of thecomposition. For example, the composition may comprise about 0.1 toabout 10 weight percent additives, based on the total weight of thecomposition.

In some embodiments, the composition further comprises a filler. Thefiller is preferably one that does not detract from the desirableoptical properties of the composition. Thus, in some embodiments, thecomposition comprises a filler comprising less than 5 weight percent ofparticles having any dimension greater than 200 nanometers. The fillermay be substantially free of particles having any dimension greater than200 nanometers. Such fillers may include, for example, nanotalcs, fumedsilicas, and nanoclays.

In some embodiments, the composition excludes polymeric component otherthan those specified above. For example, the composition may excludepolyesters, polyamides, polycarbonates, block copolymers other than theradial block copolymer, epoxy-substituted polymers (includingepoxy-substituted poly(arylene ether)s), and water-soluble polymers(such as those described in European Patent Application No. 1,512,725 A1(Ito)).

Composition

In some embodiments, the composition comprises:

(a) a poly(arylene ether) which is a poly(phenylene ether);

(b1) a radial block copolymer of styrene and butadiene; wherein theradial block copolymer has about 65 to about 70 weight percent ofrepeating units derived from styrene and a number average molecularweight of about 50,000 to about 70,000 atomic units (e.g., K-RESIN KK38)and (b2) a polystyrene-poly(ethylene-butylene)-polystyrene triblockcopolymer having about 65 to about 70 weight percent of repeating unitsderived from styrene (e.g., TUFTEC H1043), provided that the weightpercent ratio of (b1) to (b2) is 0.5:1 to 4:1;

(c) a mixture comprising benzoin (c1) and TDP (c2);

(d) a hydrocarbon resin selected from the group consisting ofhydrogenated alicyclic hydrocarbon resins and hydrogenated terpeneresins and having a softening point of 120 to 155° C. measured accordingto ASTM E28-99 (2009) (e.g., ARKON P-125, ARKON P-140, or CLEARONP-150); and optionally

(e) a non-halogenated flame retardant selected from the group consistingof resorcinol bis(diphenyl phosphate) (RDP) and bisphenol A bis(diphenylphosphate) (BPADP).

In some embodiments, (e) is RDP.

In some embodiments the weight percent ratio of (b1) to (b2) is 1.5:1 to3:1.

In some embodiments the weight percent ratio of (b1) to (b2) is 1.75:1to 2.25:1.

In some embodiments, the weight percent ratio of (b1) to (b2) is 1.9:1to 2.1:1.

In some embodiments, the weight percent of (a) present in thecomposition is 30 to 85 percent. In some embodiments, the weight percentof (a) present in the composition is 30 to 60 percent.

In some embodiments, the weight percent of the (b1) radial blockcopolymer of styrene and butadiene (e.g., K-RESIN KK38) present in thecomposition is 10 to 30 percent and the weight percent of the (b2)polystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer(e.g., TUFTEC H1043) present in the composition is 5 to 15 percent, andthe ratio of weight percents of (b1) to (b2) is in the range of 2.25:1to 1.75:1.

In some embodiments, the weight percent of benzoin (c1) present in thecomposition is 0.01 to 1 percent and the weight percent of TDP (c2)present in the composition is 0.01 to 0.7 percent. In other embodiments,the weight percent of benzoin present in the composition is 0.2 to 0.9weight percent the weight percent of TDP present in the composition is0.01 to 0.6 weight percent.

In some embodiments, the weight percent of (d) present in thecomposition is 1 to 20 percent. In other embodiments, the weight percentof (d) present in the composition is 2 to 12 percent.

In some embodiments, the weight percent of (e) present in thecomposition is 0 to 20 percent. In some embodiments, the weight percentof (e) is 6 to 14 percent.

In some embodiments, the composition comprises:

40 to 80 weight percent of (a);

12 to 36 weight percent of the (b1) radial block copolymer of styreneand butadiene (e.g., K-RESIN KK38); and

6 to 18 weight percent of the (b2)polystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer(e.g., TUFTEC H1043), provided that the ratio of (b1) to (b2) is 2.25:1to 1.75:1.

In some embodiments, the composition comprises:

40 to 80 weight percent of (a);

30 weight percent of the (b1) radial block copolymer of styrene andbutadiene (e.g., K-RESIN KK38);

15 weight percent of the (b2)polystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer(e.g., TUFTEC H1043);

0.2 to 0.8 weight percent benzoin (c1);

0.1 to 0.6 weight percent of TDP (c2); and

0 to 13 weight percent RDP (e).

In these and other embodiments, the weight percent of d present in thecomposition is 2 to 12 weight percent, and the composition ischaracterized by one or more the following properties, and preferably,two or more of the following properties, and more preferably, all threeof the following properties:

-   -   (i) a multiaxial impact of at least 20 J;    -   (ii) a percent haze of 6 percent or less; and    -   (iii) a percent transmittance of 80 percent or more

In some embodiments, the composition comprises:

40 to 80 weight percent of (a);

25 weight percent of the (b1) radial block copolymer of styrene andbutadiene (e.g., K-RESIN KK38);

12.5 weight percent of the (b2)polystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer(e.g., TUFTEC H1043);

0.2 to 0.8 weight percent benzoin (c1);

0.1 to 0.6 weight percent of TDP (c2); and

0 to 13 weight percent RDP (e).

In these and other embodiments, the weight percent of d present in thecomposition is 2 to 12 weight percent, and the composition ischaracterized by one or more the following properties, and preferably,two or more of the following properties, and more preferably, all threeof the following properties:

-   -   (i) a multiaxial impact of at least 20 J;    -   (ii) a percent haze of 6 percent or less; and    -   (iii) a percent transmittance of 80 percent or more.

In some embodiments, the hydrocarbon resin is a hydrogenated alicyclichydrocarbon resin having a softening point of 120 to 130° C. measuredaccording to ASTM E28-99 (2009) (e.g., ARKON P-125), and the weightpercent of the hydrocarbon resin present in the composition is 5 to 12weight percent, and the composition is characterized by one or more thefollowing properties, and preferably, two or more of the followingproperties, and more preferably, all three of the following properties:

-   -   (i) a multiaxial impact of at least 30 J;    -   (ii) a percent haze of 6 percent or less; and    -   (iii) a percent transmittance of 80 percent or more.

In some embodiments, the hydrocarbon resin is a hydrogenated alicyclichydrocarbon resin having a softening point of 135 to 145° C. measuredaccording to ASTM E28-99 (2009) (e.g., ARKON P-140), and the weightpercent of the hydrocarbon resin present in the composition is 3 to 8weight percent, and the composition is characterized by one or more thefollowing properties, and preferably, two or more of the followingproperties, and more preferably, all three of the following properties:

-   -   (i) a multiaxial impact of at least 25 J;    -   (ii) a percent haze of 6 percent or less; and    -   (iii) a percent transmittance of 80 percent or more.

In some embodiments, the hydrocarbon resin is a hydrogenated terpeneresin having a softening point of 145 to 155° C. measured according toASTM E28-99 (2009) (e.g., CLEARON P-150), and the weight percent of thehydrocarbon resin present in the composition is 2 to 8 weight percent,and the composition is characterized by one or more the followingproperties, and preferably, two or more of the following properties, andmore preferably, all three of the following properties:

-   -   (i) a multiaxial impact of at least 25 J;    -   (ii) a percent haze of 6 percent or less; and    -   (iii) a percent transmittance of 80 percent or more.

In some embodiments, the composition comprises:

30 to 60 weight percent of (a);

20 to 36 weight percent of (b1);

10 to 18 weight percent of (b2); provided that the ratio of weightpercents of (b1) to (b2) is in the range of 2.25:1 to 1.75:1;

0.1 to 1 weight percent of (c1);

0.1 to 0.7 weight percent of (c2);

4 to 15 weight percent of (d); and

0 to 15 weight percent of (e).

In these and other embodiments, the weight percent of benzoin (c1)present in the composition can be 0.2 to 0.9 weight percent and theweight percent of TDP (c2) present in the composition can be 0.1 to 0.6weight percent.

In some embodiments, the composition comprises:

41.0 to 48.7 weight percent of (a);

24 to 26 weight percent of (b1);

12 to 13 weight percent of (b2), provided that the ratio of (b1) to (b2)is 2.25:1 to 1.75:1;

0.2 to 0.4 weight percent of (c1);

0.1 to 0.6 weight percent of (c2);

4 to 6 weight percent of (d); and

11 to 13 weight percent RDP (e);

based on a composition comprising 100 percent by weight of (a), (b1),(b2), (c1), (c2), (d), and (e); and wherein the composition ischaracterized by one or more the following properties, and preferably,two or more of the following properties, and more preferably, all threeof the following properties:

-   -   (i) a multiaxial impact of at least 20 J as measured by ASTM D        3763-08;    -   (ii) a percent haze of 12 percent or less as measured by ASTM D        1003-00; and    -   (iii) a percent transmittance of 80 percent or more as measured        by ASTM D 1003-00.

In some embodiments, the composition comprises:

35-55 weight percent of (a);

12 to 36 weight percent of the (b1) radial block copolymer of styreneand butadiene (e.g., K-RESIN KK38);

6 to 18 weight percent of the (b2)polystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer(e.g., TUFTEC H1043), provided that the ratio of (b1) to (b2) is 2.25:1to 1.75:1;

0.2 to 0.8 weight percent benzoin;

0.1 to 0.6 weight percent of TDP (c2); and

2 to 12 weight percent of the hydrocarbon resin is a hydrogenatedalicyclic hydrocarbon resin having a softening point of 120 to 130° C.measured according to ASTM E28-99 (2009) (e.g., ARKON P-125); and

0 to 13 weight percent RDP;

wherein the composition is characterized by one or more the followingproperties, and preferably, two or more of the following properties, andmore preferably, all three of the following properties:

-   -   (i) a multiaxial impact of at least 20 J as measured by ASTM D        3763-08;    -   (ii) a percent haze of 12 percent or less as measured by ASTM D        1003-00; and    -   (iii) a percent transmittance of 80 percent or more as measured        by ASTM D 1003-00.

In some embodiments, the composition comprises:

35-55 weight percent of (a);

12 to 36 weight percent of the (b1) radial block copolymer of styreneand butadiene (e.g., K-RESIN KK38);

6 to 18 weight percent of the (b2)polystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer(e.g., TUFTEC H1043), provided that the ratio of (b1) to (b2) is 2.25:1to 1.75:1;

0.4 to 0.8 weight percent benzoin;

0.1 to 0.6 weight percent of TDP (c2); and

2 to 12 weight percent of the hydrocarbon resin is a hydrogenatedalicyclic hydrocarbon resin having a softening point of 135 to 145° C.measured according to ASTM E28-99 (2009) (e.g., ARKON P-140); and

0 to 13 weight percent RDP;

wherein the composition is characterized by one or more the followingproperties, and preferably, two or more of the following properties, andmore preferably, all three of the following properties:

-   -   (i) a multiaxial impact of at least 20 J as measured by ASTM D        3763-08;    -   (ii) a percent haze of 12 percent or less as measured by ASTM D        1003-00; and    -   (iii) a percent transmittance of 80 percent or more as measured        by ASTM D 1003-00.

In some embodiments, the composition comprises:

40 to 50 weight percent of (a);

12 to 36 weight percent of the (b1) radial block copolymer of styreneand butadiene (e.g., K-RESIN KK38);

6 to 18 weight percent of the (b2)polystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer(e.g., TUFTEC H1043), provided that the ratio of (b1) to (b2) is 2.25:1to 1.75:1;

0.2 to 0.8 weight percent benzoin (c1);

0.1 to 0.6 weight percent of TDP (c2); and

2 to 12 weight percent of the hydrocarbon resin, wherein the hydrocarbonresin is a hydrogenated terpene resin having a softening point of 145 to155° C. measured according to ASTM E28-99 (2009) (e.g., CLEARON P-150);and

0 to 13 weight percent RDP;

wherein the composition is characterized by one or more the followingproperties, and preferably, two or more of the following properties, andmore preferably, all three of the following properties:

-   -   (i) a multiaxial impact of at least 20 J as measured by ASTM D        3763-08;    -   (ii) a percent haze of 6 percent or less as measured by ASTM D        1003-00; and    -   (iii) a percent transmittance of 80 percent or more as measured        by ASTM D 1003-00.

In some embodiments, the composition comprises:

30 to 60 weight percent of (a);

12 to 36 weight percent of (b1);

6 to 18 weight percent of (b2) wherein the weight percent ratio of (b1)to (b2) is between 2.25:1 to 1.75:1;

0.1 to 1 weight percent of (c); and

2 to 15 weight percent of (d) a hydrocarbon resin selected from thegroup consisting of hydrogenated alicyclic hydrocarbon resins andhydrogenated terpene resins, and having a softening point of 120 to 155°C. measured according to ASTM E28-99 (2009) (e.g., ARKON P-125, ARKONP-140, or CLEARON P-150).

In this and other embodiments (c) can comprise (c1) and (c2), wherein(c1) is an alpha-hydroxyketone selected from the group consisting ofhydroxyacetone (1-hydroxy-2-propanone; Chemical Abstracts Service (CAS)Reg. No. 116-09-6), acetoin (3-hydroxy-2-butanone; CAS Reg. No.513-86-0), 2-hydroxyacetophenone (CAS Reg. No. 528-24-1), benzoin(2-hydroxy-2-phenylacetophenone CAS Reg. No. 119-53-9),2-hydroxy-1-phenyl-2-p-tolyl-ethanone (CAS Reg. No. 2431-02-9); and (c2)is a trihydrocarbyl phosphites P(OR¹¹)₃, wherein each occurrence of R¹¹is independently C₁-C₁₈ hydrocarbyl, wherein (c2) is selected from thegroup consisting of trioctyl phosphite, tridecyl phosphite, tridodecylphosphite, phenyl didecyl phosphite, decyl diphenyl phosphite, triphenylphosphite, and tritolyl phosphite. More particularly, (c1) is benzoinand (c2) is selected from the group consisting of trioctyl phosphite,tridecyl phosphite (TDP), tridodecyl phosphite, phenyl didecylphosphite, decyl diphenyl phosphite, triphenyl phosphite, and tritolylphosphite. The composition in this and other embodiments comprises 0.2to 0.9 weight percent of benzoin (c1) and 0.01 to 0.6 weight percent of(c2) wherein (c2) is TDP.

In this and other embodiments, the composition further comprises from 0to 15 weight percent of (e) a flame retardant, wherein (e) is ahalogenated flame retardant or a phosphorous-containing flame retardant.More particularly, (e) is resorcinol bis(diphenyl phosphate) (RDP) orbisphenol A bis(diphenyl phosphate) (BPADP).

In some embodiments, the composition comprises:

(b1) is a radial block copolymer of styrene and butadiene; wherein theradial block copolymer has about 65 to about 70 weight percent ofrepeating units derived from styrene and a number average molecularweight of about 50,000 to about 70,000 atomic units (e.g., K-RESINKK38);

(b2) is a polystyrene-poly(ethylene-butylene)-polystyrene triblockcopolymer having about 65 to about 70 weight percent of repeating unitsderived from styrene (e.g., TUFTEC H1043); and

(c) is benzoin, and further comprising 0.01 to 0.6 weight percent of TDPand 0 to 15 weight percent of RDP.

In some embodiments, the composition comprises:

30 to 60 weight percent of (a);

20 to 36 weight percent of (b1);

10 to 18 weight percent of (b2) wherein the ratio of weight percents of(b1) to (b2) is 1.75:1 to 2.25:1;

0.1 to 1 weight percent of (c);

2 to 15 weight percent of (d) wherein (d) is a hydrocarbon resinselected from the group consisting of hydrogenated alicyclic hydrocarbonresins and hydrogenated terpene resins, and having a softening point of135 to 155° C. measured according to ASTM E28-99 (2009) (e.g., ARKONP-140 or CLEARON P-150) or 4 to 15 weight percent of (d) wherein (d) isa hydrogenated alicyclic hydrocarbon resin having a softening point of120 to 130° C. measured according to ASTM E28-99 (2009) (e.g., ARKONP-125); and optionally further comprising from 0 to 15 weight percent of(e) a flame retardant;

wherein the composition has a multiaxial impact of at least 20 J asmeasured by ASTM D 3763-08 and is characterized by one or more of thefollowing properties:

-   -   (i) a percent haze of 15 percent or less as measured by ASTM D        1003-00; and    -   (ii) a percent transmittance of 75 percent or more as measured        by ASTM D 1003-00.

In some embodiments of the composition:

(b1) is a radial block copolymer of styrene and butadiene; wherein theradial block copolymer has about 65 to about 70 weight percent ofrepeating units derived from styrene and a number average molecularweight of about 50,000 to about 70,000 atomic units (e.g., K-RESINKK38);

(b2) is a polystyrene-poly(ethylene-butylene)-polystyrene triblockcopolymer having about 65 to about 70 weight percent of repeating unitsderived from styrene (e.g., TUFTEC H1043);

(c) is benzoin; and optionally further comprising from 0.1 to 0.6 weightpercent of TDP.

In some embodiments, the composition comprises:

41.0 to 48.7 weight percent of a poly(phenylene ether);

24 to 26 weight percent of a radial block copolymer of styrene andbutadiene; wherein the radial block copolymer has about 65 to about 70weight percent of repeating units derived from styrene and a numberaverage molecular weight of about 50,000 to about 70,000 atomic units(e.g., K-RESIN KK38);

12 to 13 percent of a polystyrene-poly(ethylene-butylene)-polystyrenetriblock copolymer having about 65 to about 70 weight percent ofrepeating units derived from styrene (e.g., TUFTEC H1043), provided thatthe ratio of the radial block copolymer to thepolystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer is2.25:1 to 1.75:1;

0.2 to 0.4 weight percent of benzoin;

0.1 to 0.6 weight percent of TDP;

2 to 15 weight percent of a hydrocarbon resin selected from the groupconsisting of hydrogenated alicyclic hydrocarbon resins and hydrogenatedterpene resins, and having a softening point of 135 to 155° C. measuredaccording to ASTM E28-99 (2009) (e.g., ARKON P-140 or CLEARON P-150), or4 to 15 weight percent of a hydrogenated alicyclic hydrocarbon resinhaving a softening point of 120 to 130° C. measured according to ASTME28-99 (2009) (e.g., ARKON P-125); and

11 to 13 weight percent RDP;

based on a composition comprising 100 percent by weight, and wherein thecomposition has a multiaxial impact of at least 20 J as measured by ASTMD 3763-08 and is characterized by one or more of the followingproperties:

-   -   (i) a percent haze of 15 percent or less as measured by ASTM D        1003-00; and    -   (ii) a percent transmittance of 75 percent or more as measured        by ASTM D 1003-00.

In this and other embodiments, the ratio of weight percent ratios ofKK38 to Tuftec 1043 is between 1.9:1 to 2.1:1.

Process

In another aspect, the invention provides a process for preparing athermoplastic composition comprising combining components (a), (b2),(c), (d), and optionally (e) as described herein at the feed throat(“upstream”) of an extruder. Component (b1) is added “downstream” of theextruder feed throat, to minimize haze and reduce rubber degradation.For instance, the process comprises combining components (a), (b2), (c),(d), and optionally (e) as described herein at the feed throat(“upstream”) and (b1) at the sixth barrel (“downstream”) of a WernerPfleiderer twin screw 30 mm extruder at a temperature of 220° C. to 280°C., a screw rate of 350 rpm, and a feed rate of 40 pounds per hour. Theskilled artisan will recognize that other extruders may also be used topractice the invention.

The resulting thermoplastic is characterized by at least one of thefollowing properties:

-   -   (i) a multiaxial impact of at least 20 J as measured by ASTM D        3763-08;    -   (ii) a percent haze of 15 percent or less as measured by ASTM D        1003-00; and    -   (iii) a percent transmittance of 75 percent or more as measured        by ASTM D 1003-00.

Thus, in one aspect, the invention is directed to a process forpreparing a composition comprising:

(a) a poly(arylene ether);

(b1) a radial block copolymer of an alkenyl aromatic monomer and aconjugated diene; wherein the radial block copolymer has about 50 toabout 70 weight percent of repeating units derived from the alkenylaromatic monomer and a number average molecular weight of about 50,000to about 70,000 atomic units;

(b2) a linear block copolymer of an alkenyl aromatic monomer and aconjugated diene; wherein the linear block copolymer has about 55 toabout 70 weight percent of repeating units derived from the alkenylaromatic monomer; wherein the ratio of (b1) to (b2) is 0.5:1 to 4:1;

(c) one or more optical enhancing agents; and

(d) a hydrocarbon resin selected from the group consisting ofhydrogenated alicyclic hydrocarbon resins and hydrogenated terpeneresins;

wherein the composition is characterized by one or more of the followingproperties:

-   -   (i) a multiaxial impact of at least 20 J as measured by ASTM D        3763-08;    -   (ii) a percent haze of 15 percent or less as measured by ASTM D        1003-00; and    -   (iii) a percent transmittance of 75 percent or more as measured        by ASTM D 1003-00        comprising the steps of:

(1) combining (a), (c), (b2), and (d) in the feed throat of an extruderto form a first mixture;

(2) extruding the first mixture at a temperature of 220° C. to 280° C.,a screw rate of 350 rpm, and a feed rate of 40 pounds per hour; and

(3) adding (b1) to the extruding mixture as it progresses from theextruder feed throat toward the die to form a second mixture.

In one embodiment, the mixture of step (1) further comprises (e) a flameretardant selected from the group consisting of resorcinol bis(diphenylphosphate) (RDP) and bisphenol A bis(diphenyl phosphate) (BPADP) to thefirst mixture during step (2).

In another embodiment, the first mixture comprises

(a) a poly(arylene ether) comprising a poly(phenylene ether);

(b2) a polystyrene-poly(ethylene-butylene)-polystyrene triblockcopolymer having about 65 to about 70 weight percent of repeating unitsderived from styrene (e.g., TUFTEC H1043);

(c) benzoin (c1) and tridecyl phosphite (c2, TDP); and

(d) a hydrocarbon resin selected from the group consisting ofhydrogenated alicyclic hydrocarbon resins and hydrogenated terpeneresins and having a softening point of 120 to 155° C. measured accordingto ASTM E28-99 (2009) (e.g., ARKON P-125, ARKON P-140, or CLEARONP-150);

In another embodiment, the second mixture comprises:

(a) a poly(arylene ether) comprising a poly(phenylene ether);

(b1) a radial block copolymer of styrene and butadiene; wherein theradial block copolymer has about 65 to about 70 weight percent ofrepeating units derived from styrene and a number average molecularweight of about 50,000 to about 70,000 atomic units (e.g., K-RESINKK38);

(b2) a polystyrene-poly(ethylene-butylene)-polystyrene triblockcopolymer having about 65 to about 70 weight percent of repeating unitsderived from styrene (e.g., TUFTEC H1043);

(c) benzoin (c1) and tridecyl phosphite (c2, TDP);

(d) a hydrocarbon resin selected from the group consisting ofhydrogenated alicyclic hydrocarbon resins and hydrogenated terpeneresins and having a softening point of 120 to 155° C. measured accordingto ASTM E28-99 (2009) (e.g., ARKON P-125, ARKON P-140, or CLEARONP-150); and

(e) a non-halogenated flame retardant selected from the group consistingof resorcinol bis(diphenyl phosphate) (RDP) and bisphenol A bis(diphenylphosphate) (BPADP).

In another embodiment, the second mixture comprises:

35 to 85 weight percent of (a);

10 to 40 weight percent of (b1) a radial block copolymer of styrene andbutadiene; wherein the radial block copolymer has about 65 to about 70weight percent of repeating units derived from styrene and a numberaverage molecular weight of about 50,000 to about 70,000 atomic units(e.g., K-RESIN KK38);

5 to 20 weight percent of (b2) apolystyrene-poly(ethylene-butylene)-polystyrene triblock copolymerhaving about 65 to about 70 weight percent of repeating units derivedfrom styrene (e.g., TUFTEC H1043);

0 to 1 weight percent (c1) benzoin;

0 to 0.7 weight percent of (c2) TDP;

0 to 20 weight percent of (d); and

0 to 20 weight percent of (e).

In another embodiment, the second mixture comprises 6 to 14 weightpercent of (e).

In another embodiment, the second mixture comprises:

40 to 80 weight percent of (a);

12 to 35 weight percent of (b1) a radial block copolymer of styrene andbutadiene; wherein the radial block copolymer has about 65 to about 70weight percent of repeating units derived from styrene and a numberaverage molecular weight of about 50,000 to about 70,000 atomic units(e.g., K-RESIN KK38); and

3 to 18 weight percent of (b2) apolystyrene-poly(ethylene-butylene)-polystyrene triblock copolymerhaving about 65 to about 70 weight percent of repeating units derivedfrom styrene (e.g., TUFTEC H1043).

In another embodiment, the second mixture comprises:

25 weight percent of (b1) a radial block copolymer of styrene andbutadiene; wherein the radial block copolymer has about 65 to about 70weight percent of repeating units derived from styrene and a numberaverage molecular weight of about 50,000 to about 70,000 atomic units(e.g., K-RESIN KK38); and

12.5 weight percent of (b2) apolystyrene-poly(ethylene-butylene)-polystyrene triblock copolymerhaving about 65 to about 70 weight percent of repeating units derivedfrom styrene (e.g., TUFTEC H1043).

In another embodiment, the second mixture comprises:

5 to 8 weight percent of (d1) a hydrogenated alicyclic hydrocarbon resinhaving a softening point of 120 to 130° C. measured according to ASTME28-99 (2009) (e.g., ARKON P-125) and the resulting extrudate of step(3) is characterized by one or more of the following properties:

-   -   (i) a multiaxial impact of at least 20 J;    -   (ii) a percent haze of 6 percent or less; and    -   (iii) a percent transmittance of 80 percent or more.

In another embodiment, the second mixture comprises:

3 to 8 weight percent of (d) a hydrogenated alicyclic hydrocarbon resinhaving a softening point of 135 to 145° C. measured according to ASTME28-99 (2009) (e.g., ARKON P-140), and the resulting extrudate of step(3) is characterized by one or more of the following properties:

-   -   (i) a multiaxial impact of at least 25 J;    -   (ii) a percent haze of 6 percent or less; and    -   (iii) a percent transmittance of 80 percent or more.

In another embodiment, the second mixture comprises:

2 to 8 weight percent of (d) a hydrogenated terpene resin having asoftening point of 145 to 155° C. measured according to ASTM E28-99(2009) (e.g., CLEARON P-150), and the resulting extrudate of step (3) ischaracterized by one or more of the following properties:

-   -   (i) a multiaxial impact of at least 25 J;    -   (ii) a percent haze of 6 percent or less; and    -   (iii) a percent transmittance of 80 percent or more.

In another embodiment, the second mixture comprises:

30 to 60 weight percent of (a);

20 to 36 weight percent of (b1);

10 to 18 weight percent of (b2); provided that the ratio of weightpercents of (b1) to (b2) is in the range of 1.75:1 to 2.25:1;

0.1 to 1 weight percent of (c1);

0.1 to 0.7 weight percent of (c2);

4 to 15 weight percent of (d); and

0 to 15 weight percent of (e).

In these and other embodiments, the weight percent of benzoin (c1)present in the composition is 0.2 to 0.9 weight percent and the weightpercent of TDP (c2) present in the composition is 0.01 to 0.6 weightpercent.

In another embodiment, the second mixture comprises:

41.0 to 48.7 weight percent of (a);

24-26 weight percent of (b1);

12 to 13 weight percent of (b2), provided that the ratio of (b1) to (b2)is 2.25:1 to 1.75:1;

0.2 to 0.4 weight percent of (c1);

0.1 to 0.6 weight percent of (c2);

4 to 6 weight percent of (d); and

11 to 13 weight percent RDP;

based on a composition comprising 100 percent by weight of (a), (b1),(b2), (c1), (c2), (d), and (e), and wherein the composition ischaracterized by at least two of the following properties:

-   -   (i) a multiaxial impact of at least 20 J as measured by ASTM D        3763-08;    -   (ii) a percent haze of 12 percent or less as measured by ASTM D        1003-00; and    -   (iii) a percent transmittance of 80 percent or more as measured        by ASTM D 1003-00.

Other aspects include articles formed from any of the above-describedcompositions. The compositions are useful for products including, forexample, animal cages, food packaging, sheet, film, ink cartridges,trays, tubes, and pipes.

The invention includes the following embodiments.

Embodiment 1

A composition comprising: (a) a poly(arylene ether); (b1) a radial blockcopolymer of an alkenyl aromatic monomer and a conjugated diene; whereinthe radial block copolymer has about 50 to about 70 weight percent ofrepeating units derived from the alkenyl aromatic monomer and a numberaverage molecular weight of about 50,000 to about 70,000 atomic units;(b2) a linear block copolymer of an alkenyl aromatic monomer and aconjugated diene; wherein the linear block copolymer has about 55 toabout 70 weight percent of repeating units derived from the alkenylaromatic monomer; wherein the ratio of (b1) to (b2) is 0.5:1 to 4:1; (c)one or more optical enhancing agents; and (d) a hydrocarbon resinselected from the group consisting of hydrogenated alicyclic hydrocarbonresins and hydrogenated terpene resins; wherein the composition ischaracterized by one or more of the following properties: (i) amultiaxial impact of at least 20 J as measured by ASTM D 3763-08; (ii) apercent haze of 15 percent or less as measured by ASTM D 1003-00; and(iii) a percent transmittance of 75 percent or more as measured by ASTMD 1003-00.

Embodiment 2

The composition of embodiment 1, wherein the poly(arylene ether)comprises 2,6-dimethyl-1,4-phenylene ether units,2,3,6-trimethyl-1,4-phenylene ether units, or a combination thereof.

Embodiment 3

The composition of embodiment 1 or 2, further comprising (e) a flameretardant.

Embodiment 4

The composition of embodiment 3, wherein (e) is a halogenated flameretardant or a phosphorous-containing flame retardant.

Embodiment 5

The composition of embodiment 4, wherein (e) is a phosphorous-containingflame retardant selected from the group consisting of resorcinolbis(diphenyl phosphate) (RDP) and bisphenol A bis(diphenyl phosphate)(BPADP).

Embodiment 6

The composition of any of embodiments 1-5, wherein the ratio of (b1) to(b2) is 1:1 to 3:1.

Embodiment 7

The composition of any of embodiments 1-6, wherein (c) comprises (c1)and (c2), wherein: (c1) is an alpha-hydroxyketone selected from thegroup consisting of hydroxyacetone (1-hydroxy-2-propanone; ChemicalAbstracts Service (CAS) Reg. No. 116-09-6), acetoin(3-hydroxy-2-butanone; CAS Reg. No. 513-86-0), 2-hydroxyacetophenone(CAS Reg. No. 528-24-1), benzoin (2-hydroxy-2-phenylacetophenone CASReg. No. 119-53-9), 2-hydroxy-1-phenyl-2-p-tolyl-ethanone (CAS Reg. No.2431-02-9); and (c2) is a trihydrocarbyl phosphites P(OR¹¹)₃, whereineach occurrence of R¹¹ is independently C₁-C₁₈ hydrocarbyl, wherein (c2)is selected from the group consisting of trioctyl phosphite, tridecylphosphite, tridodecyl phosphite, phenyl didecyl phosphite, decyldiphenyl phosphite, triphenyl phosphite, and tritolyl phosphite.

Embodiment 8

The composition of embodiment 7, wherein (c1) is benzoin and (c2) isselected from the group consisting of trioctyl phosphite, tridecylphosphite (TDP), tridodecyl phosphite, phenyl didecyl phosphite, decyldiphenyl phosphite, triphenyl phosphite, and tritolyl phosphite.

Embodiment 9

The composition of any of embodiments 1-8, wherein the hydrocarbon resin(d) has a softening point of 120 to 155° C. measured according to ASTME28-99 (2009).

Embodiment 10

The composition of any of embodiments 1-9, further comprising one ormore additives selected from the group consisting of stabilizers, moldrelease agents, processing aids, drip retardants, nucleating agents, UVblockers, dyes, pigments, antioxidants, anti-static agents, blowingagents, mineral oil, metal deactivators, antiblocking agents, and thelike, and combinations thereof.

Embodiment 11

The composition of any of embodiments 1-10, further comprising a fillerselected from the group consisting of nanotalcs, fumed silicas, andnanoclays.

Embodiment 12

The composition of embodiment 1, wherein: (a) the poly(arylene ether)comprises a poly(phenylene ether); (b1) has about 65 to about 70 weightpercent of repeating units derived from the alkenyl aromatic monomer;wherein the alkenyl aromatic monomer is styrene and the conjugated dieneis butadiene; (b2) has about 65 to about 70 weight percent of repeatingunits derived from the alkenyl aromatic monomer; wherein the linearblock copolymer is a polystyrene-poly(ethylene-butylene)-polystyrenetriblock copolymer; and wherein the ratio of (b1) to (b2) is from 1.5:1to 2.5:1; (c) comprises benzoin (c1) and tridecyl phosphite (c2, TDP);and (d) has a softening point of about 120 to about 155° C. measuredaccording to ASTM E28-99 (2009); further comprising a non-halogenatedflame retardant (e) selected from the group consisting of resorcinolbis(diphenyl phosphate) (RDP) and bisphenol A bis(diphenyl phosphate)(BPADP).

Embodiment 13

The composition of embodiment 12, wherein (e) is RDP.

Embodiment 14

The composition of embodiment 12, wherein the weight percent ratio of(b1) to (b2) is 1.75:1 to 2.25:1.

Embodiment 15

The composition of embodiment 12, wherein the weight percent ratio of(b1) to (b2) is 1.9:1 to 2.1:1.

Embodiment 16

The composition of embodiment 1 or 2, comprising: 30 to 60 weightpercent of (a); 12 to 36 weight percent of (b1); 6 to 18 weight percentof (b2) wherein the weight percent ratio of (b1) to (b2) is 1.75:1 to2.25:1; 0.1 to 1 weight percent of (c); and 2 to 15 weight percent of(d).

Embodiment 17

The composition of embodiment 16, wherein (d) has a softening point of120 to 155° C. measured according to ASTM E28-99 (2009).

Embodiment 18

The composition of embodiment 16, wherein (c) comprises (c1) and (c2),wherein: (c1) is an alpha-hydroxyketone selected from the groupconsisting of hydroxyacetone (1-hydroxy-2-propanone; Chemical AbstractsService (CAS) Reg. No. 116-09-6), acetoin (3-hydroxy-2-butanone; CASReg. No. 513-86-0), 2-hydroxyacetophenone (CAS Reg. No. 528-24-1),benzoin (2-hydroxy-2-phenylacetophenone CAS Reg. No. 119-53-9),2-hydroxy-1-phenyl-2-p-tolyl-ethanone (CAS Reg. No. 2431-02-9); and (c2)is a trihydrocarbyl phosphites P(OR¹¹)₃, wherein each occurrence of R¹¹is independently C₁-C₁₈ hydrocarbyl, wherein (c2) is selected from thegroup consisting of trioctyl phosphite, tridecyl phosphite, tridodecylphosphite, phenyl didecyl phosphite, decyl diphenyl phosphite, triphenylphosphite, and tritolyl phosphite.

Embodiment 19

The composition of embodiment 18, wherein (c1) is benzoin and (c2) isselected from the group consisting of trioctyl phosphite, tridecylphosphite (TDP), tridodecyl phosphite, phenyl didecyl phosphite, decyldiphenyl phosphite, triphenyl phosphite, and tritolyl phosphite.

Embodiment 20

The composition of embodiment 19, comprising 0.2 to 0.9 weight percentof benzoin (c1) and 0.01 to 0.6 weight percent of (c2) wherein (c2) isTDP.

Embodiment 21

The composition of embodiment 16, further comprising (e) a flameretardant.

Embodiment 22

The composition of embodiment 21, wherein (e) is a halogenated flameretardant or a phosphorous-containing flame retardant.

Embodiment 23

The composition of embodiment 22, wherein (e) is resorcinol bis(diphenylphosphate) (RDP) or bisphenol A bis(diphenyl phosphate) (BPADP).

Embodiment 24

The composition of embodiment 16 or 17, wherein: (b1) has about 65 toabout 70 weight percent of repeating units derived from the alkenylaromatic monomer; wherein the alkenyl aromatic monomer is styrene andthe conjugated diene is butadiene; (b2) has about 65 to about 70 weightpercent of repeating units derived from the alkenyl aromatic monomer;wherein the linear block copolymer is apolystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer; and(c) is benzoin; further comprising 0.01 to 0.6 weight percent of TDP and0 to 15 weight percent of RDP.

Embodiment 25

The composition of embodiment 1 or 2, comprising: 30 to 60 weightpercent of (a); 20 to 36 weight percent of (b1); 10 to 18 weight percentof (b2) wherein the ratio of weight percents of (b1) to (b2) is between2.25:1 to 1.75:1; 0.1 to 1 weight percent of (c); and 2 to 15 weightpercent of (d) wherein (d) has a softening point of about 135 to about155° C. measured according to ASTM E28-99 (2009), or 4 to 15 weightpercent of (d) wherein (d) has a softening point of about 120 to about130° C. measured according to ASTM E28-99 (2009); wherein thecomposition has a multiaxial impact of at least 20 J as measured by ASTMD 3763-08 and is characterized by one or more of the followingproperties: (i) a percent haze of 15 percent or less as measured by ASTMD 1003-00; and (ii) a percent transmittance of 75 percent or more asmeasured by ASTM D 1003-00.

Embodiment 26

The composition of embodiment 25, further comprising (e) a flameretardant.

Embodiment 27

The composition of embodiment 25 or 26, wherein: (b1) has about 65 toabout 70 weight percent of repeating units derived from the alkenylaromatic monomer; wherein the alkenyl aromatic monomer is styrene andthe conjugated diene is butadiene; (b2) has about 65 to about 70 weightpercent of repeating units derived from the alkenyl aromatic monomer;wherein the linear block copolymer is apolystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer; and(c) is benzoin.

Embodiment 28

The composition of embodiment 27, further comprising from 0.1 to 0.6weight percent of TDP.

Embodiment 29

The composition of embodiment 7, comprising 41.0 to 48.7 weight percentof (a); 24 to 26 weight percent of (b1); 12 to 13 weight percent of(b2), provided that the ratio of (b1) to (b2) is 1.75:1 to 2.25:1; 0.2to 0.4 weight percent of (c1); 0.1 to 0.6 weight percent of (c2); 2 to15 weight percent of (d) wherein (d) has a softening point of about 135to about 155° C. measured according to ASTM E28-99 (2009), or 4 to 15weight percent of (d) wherein (d) has a softening point of about 120 toabout 130° C. measured according to ASTM E28-99 (2009); and furthercomprising 11 to 13 weight percent RDP; based on a compositioncomprising 100 percent by weight of (a), (b1), (b2), (c1), (c2), (d),and (e), and wherein the composition has a multiaxial impact of at least20 J as measured by ASTM D 3763-08 and is characterized by one or moreof the following properties: (i) a percent haze of 15 percent or less asmeasured by ASTM D 1003-00; and (ii) a percent transmittance of 75percent or more as measured by ASTM D 1003-00.

Embodiment 30

The composition of embodiment 29, wherein the ratio of (b1) to (b2) is1.9:1 to 2.1:1.

Embodiment 31

The composition of embodiment 30, wherein: (b1) has about 65 to about 70weight percent of repeating units derived from the alkenyl aromaticmonomer; wherein the alkenyl aromatic monomer is styrene and theconjugated diene is butadiene; (b2) has about 65 to about 70 weightpercent of repeating units derived from the alkenyl aromatic monomer;wherein the linear block copolymer is apolystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer; (c1)is benzoin; and (c2) is TDP.

Embodiment 32

A composition, comprising: 41.0 to 48.7 weight percent of apoly(phenylene ether); 24 to 26 weight percent of a radial blockcopolymer of styrene and butadiene; wherein the radial block copolymerhas about 65 to about 70 weight percent of repeating units derived fromstyrene and a number average molecular weight of about 50,000 to about70,000 atomic units; 12 to 13 percent of a linear block copolymer of analkenyl aromatic monomer and a conjugated diene; wherein the linearblock copolymer has about 65 to about 70 weight percent of repeatingunits derived from the alkenyl aromatic monomer; wherein the linearblock copolymer is a polystyrene-poly(ethylene-butylene)-polystyrenetriblock copolymer; provided that the ratio of the radial blockcopolymer to the linear block copolymer is 2.25:1 to 1.75:1; 0.2 to 0.4weight percent of benzoin; 0.1 to 0.6 weight percent of TDP; ahydrocarbon resin selected from the group consisting of hydrogenatedalicyclic hydrocarbon resins and hydrogenated terpene resins, in anamount of 2 to 15 weight percent wherein the hydrocarbon resin has asoftening point of about 135 to about 155° C. measured according to ASTME28-99 (2009), or in an amount of 4 to 15 weight percent of wherein thehydrocarbon resin has a softening point of about 120 to about 130° C.measured according to ASTM E28-99 (2009); and 11 to 13 weight percentRDP; based on a composition comprising 100 percent by weight, andwherein the composition has a multiaxial impact of at least 20 J asmeasured by ASTM D 3763-08 and is characterized by one or more of thefollowing properties: (i) a percent haze of 15 percent or less asmeasured by ASTM D 1003-00; and (ii) a percent transmittance of 75percent or more as measured by ASTM D 1003-00.

Embodiment 33

The composition of embodiment 32, wherein the ratio the radial blockcopolymer to the linear block copolymer is 1.9:1 to 2.1:1.

Embodiment 34

A process for preparing the composition of embodiment 1, comprising: (1)combining (a), (c), (b2), and (d) in the feed throat of an extruder toform a first mixture; (2) extruding (i.e., compounding) the firstmixture at a temperature of 220 to 280° C.; and (3) adding (b1) to theextruding mixture as it progresses from the extruder feed throat towardthe die to form a second mixture.

Embodiment 35

The process of embodiment 34, wherein the first mixture furthercomprises (e) a flame retardant selected from the group consisting ofresorcinol bis(diphenyl phosphate) (RDP) and bisphenol A bis(diphenylphosphate) (BPADP) to the first mixture during step (2).

Embodiment 36

The process of embodiment 34, wherein the first mixture comprises: (a) apoly(arylene ether) comprising a poly(phenylene ether); (b2) apolystyrene-poly(ethylene-butylene)-polystyrene triblock copolymerhaving about 65 to about 70 weight percent of repeating units derivedfrom styrene; (c) benzoin (c1) and TDP (c2); and (d) a hydrocarbon resinhaving a softening point of about 120 to about 155° C. measuredaccording to ASTM E28-99 (2009).

Embodiment 37

The process of embodiments 34, wherein the second mixture comprises: (a)a poly(arylene ether) comprising a poly(phenylene ether); (b1) a radialblock copolymer of styrene and butadiene; wherein the radial blockcopolymer has about 65 to about 70 weight percent of repeating unitsderived from styrene; (b2) apolystyrene-poly(ethylene-butylene)-polystyrene triblock copolymerhaving about 65 to about 70 weight percent of repeating units derivedfrom styrene; (c) benzoin (c1) and tridecyl phosphite (c2, TDP); (d) ahydrocarbon resin having a softening point of about 120 to about 155° C.measured according to ASTM E28-99 (2009); and (e) a non-halogenatedflame retardant selected from the group consisting of resorcinolbis(diphenyl phosphate) (RDP) and bisphenol A bis(diphenyl phosphate)(BPADP).

Embodiment 38

The process of embodiment 37, wherein the second mixture comprises: 30to 60 weight percent of (a); 20 to 36 weight percent of (b1); 10 to 18weight percent of (b2); provided that the ratio of weight percents of(b1) to (b2) is in the range of 2.25:1 to 1.75:1; 0.1 to 1 weightpercent of (c1); 0.1 to 0.7 weight percent of (c2); 4 to 15 weightpercent of (d); and 0 to 15 weight percent of (e).

Embodiment 39

An article comprising the composition of any of embodiments 1-33.

Embodiment 40

The article of embodiment 39, which is a container or a protectivecovering.

The invention is further illustrated by the following non-limitingexamples.

EXAMPLES

All samples were prepared on a 30 mm Werner Pfleiderer extruder. Allblend components were added at the feed throat with the exception ofKK38, which was added at the 6^(th) barrel unless otherwise stated.Extrusion temperatures were set at 240° C., 250° C., 260° C., 260° C.,260° C. and 250° C. from feed throat to die. The extruder was run at 350RPM with a 40 pound/hour feed rate and full vacuum on barrel 9.

All samples were molded on a 170 ton 8.5 oz barrel Vandorn molder.Temperatures were set at 450° F. for the barrel and 150° F. for themold. A 4.4″ shot with 0.5″ cutoff and 2′/second velocity was used. Themolded tree consisted of 2-4″×⅛″ plaques, 2 type I tensile bars, 2 Izodbars and 2½″×5″×⅛″ bars.

Table of Materials Component Source .40IV-PPE Poly (2,6dimethyl-1,4-phenylene ether) having an intrinsic viscosity 0.40deciliter/gram, obtained as PPO 640 from SABIC's Innovative Plasticsbusiness .46IV-PPE Poly (2,6 dimethyl-1,4-phenylene ether) having anintrinsic viscosity 0.46 deciliter/gram, obtained as PPO 646 fromSABIC's Innovative Plastics business KK38 Styrene-Butadiene Radial BlockCopolymer, obtained as K-RESIN KK38 from Chevron Phillips Tuftec H1043Polystyrene-poly(ethylene-butylene)-polystyrene triblock copolymerhaving a polystyrene content of about 67 weight percent, obtained asTUFTEC H1043 from Asahi Kasei Benzoin 2-Hydroxy-1,2-di(phenyl)ethanone(CAS 119-5309), from Sinbiotik Tridecyl Phosphite Phosphorous acid,trisdecyl ester (CAS2929-86-4), from Dover (TDP) Corporation ResorcinolTetraphenyl resorcinol diphosphate (CAS 125997-21-9), from IPLbis(diphenyl Supresta phosphate) (RDP) ARKON P-125 Hydrogenatedalicyclic hydrocarbon resin having a softening point of about 125° C.and a glass transition temperature (T_(g)) of about 74° C., obtained asARKON P-125 from Arakawa Chemical Company ARKON P-140 Hydrogenatedalicyclic hydrocarbon resin having a softening point of about 140° C.and a glass transition temperature of about 90° C., obtained as ARKONP-140 from Arakawa Chemical Company CLEARON P-150 Hydrogenated terpeneresin having a softening point of about 152° C. and a glass transitiontemperature (T_(g)) of about 98° C., obtained as CLEARON P-150 fromYasuhara Chemical CompanyASTM Tests

Percent haze was measured according to American Society for testingMaterials (ASTM) D1003-00 at 23° C. and a thickness of 3.2 millimeters.Percent haze is an objective property that correlates with the subjectproperty of optical clarity.

Percent transmittance was measured according to ASTM D 1003-00 at athickness of 3.2 millimeters (mm).

Multiaxial Impact (“Standard Test Method for High Speed PunctureProperties of Plastics Using Load and Displacement Sensors”) wasmeasured in Joules (J) according to ASTM D 3763-08 at a test velocity of3.3 meters/second (m/s) at 23° C. and a thickness of 3.2 mm.

HDT (“Standard Test Method for Deflection Temperature of Plastics underFlexural Load in the Edgewise Position”) was measured according to ASTMD 648-07 on 3.2 mm×12.5 mm bars at a loading fiber stress of 1.82+/−2.5%Mega Pascal (MPa).

Examples 1-12

In general, in samples containing 15 percent KK-38 and 7.5 percentTuftec H1043, the addition of Benzoin and Arkon P125 reduced theobserved multiaxial impact. In Examples 1-12, 15 weight percent of KK-38and 7.5 weight percent of Tuftec H1043 were used to make the resins. Theratio of KK-38 to Tuftec H1043 was maintained at 2 to 1 in each of theexamples, but the amount of the other ingredients that were used wasvaried. The results are summarized in Tables 1A, 1B, and 1C.

Examples 1-4 (Table 1A) illustrate how the presence of benzoin and ArkonP-125 affect the properties of the resin. Thus, the resin of Example 1(“Control”) was free of benzoin and Arkon P-125. When 0.3 weight percentof benzoin was added to the resin composition (Example 2), haze andpercent transmittance improved compared to Example 1, but multiaxialimpact resistance did not. This finding was also observed in Example 3,where the resin contained both benzoin (0.3 weight percent) and ArkonP-125 (5 weight percent). Increasing the amount of Arkon P-125 to 10weight percent improved haze and percent transmittance relative toExamples 2 and 3, but multiaxial impact resistance was reduced relativeto the Examples 1-3.

TABLE 1A Effect of Benzoin and Arkon P-125 Example Number 1 2 3 4Component Weight Percent .40IV PPE 77.0 77.2 71.7 67.2 KK-38 15.0 15.015.0 15.0 Tuftec H1043 7.5 7.5 7.5 7.5 Benzoin 0.0 0.3 0.3 0.3 ArkonP-125 0.0 0.0 5 10 TDP 0.5 0.5 0.5 0.5 RDP 0.0 0.0 0.0 0.0 TOTAL 100 100100 100 Physical Properties Multiaxial Impact 55.4 37.6 11.6 2.38 HDT144 145 139 130 Haze 33.7 12.1 7.2 6.3 % Transmittance 71.1 82.1 83.183.7

Examples 5-8 are summarized in Table 1B. The resin of Example 5 was freeof benzoin and Arkon P-125, as in Example 1, but contained 8 weightpercent RDP. Comparing Example 5 to Example 1 shows that the multiaxialimpact was reduced when RDP was present in the resin. When 0.3 weightpercent of benzoin was added to the resin composition (Example 6), hazeand percent transmittance improved compared to Example 5, but multiaxialimpact resistance was reduced. This outcome was also observed in Example7, where the resin contained both benzoin (0.3 weight percent) and ArkonP-125 (5 weight percent). Increasing the amount of Arkon P-125 to 10weight percent (Example 8) also haze and percent transmittance comparedto Example 7, but the multiaxial impact resistance was approximately thesame.

TABLE 1B Effect of Benzoin, Arkon P-125 and 8 Weight Percent of RDPExample Number 5 6 7 8 Component Weight Percent .40Iv PPE 69.5 69.2 64.259.2 KK-38 15 15 15 15 Tuftec H1043 7.5 7.5 7.5 7.5 Benzoin 0.0 0.3 0.30.3 Arkon P-125 0.0 0.0 5 10 TDP 0.5 0.5 0.5 0.5 RDP 8 8 8 8 TOTAL 100100 100 100 Physical Properties Multiaxial Impact 13.5 2.58 2.34 2.08HDT 115 114 106 98.4 Haze 19.9 4.5 5.1 3.9 % Transmittance 71.1 81.382.4 83.4

Examples 9-12 are summarized in Table 1C. The resin of Example 9 wasfree of benzoin and Arkon P-125, as in Example 1, but contained 12weight percent RDP. Comparing Example 9 to Examples 1 and 5 shows thatthe multiaxial impact resistance was reduced when RDP was present in theresin. When 0.3 weight percent of benzoin was added to the resincomposition (Example 10), haze and percent transmittance compared toExample 9, but multiaxial impact resistance dropped. This finding wasalso observed in Example 11, where the resin contained both benzoin (0.3weight percent) and Arkon P-125 (5 weight percent). Increasing theamount of Arkon P-125 to 10 weight percent (Example 12) also reducedhaze and percent transmittance relative to Example 11, but themultiaxial impact resistance was approximately the same.

TABLE 1C Effect of Benzoin, P-125, and 12 Weight Percent RDP ExampleNumber 9 10 11 12 Component Weight Percent .40Iv PPE 65.5 65.2 60.2 55.2KK-38 15.0 15 15 15 Tuftec H1043 7.5 7.5 7.5 7.5 Benzoin 0.0 0.3 0.3 0.3Arkon P-125 0.0 0.0 5 10 TDP 0.5 0.5 0.5 0.5 RDP 12 12 12 12 TOTAL 100100 100 100 Physical Properties Multiaxial Impact 12.9 2.32 1.58 2.06HDT 100 99.6 93.9 86.8 Haze 12.7 3.4 4.4 5.9 % Transmittance 70.9 81.983.1 83.2

In summary, in each of the resins containing 15 weight percent of KK-38and 7.5 weight percent of Tuftec H1043, multiaxial impact resistance wasreduced when any other additives were present. When benzoin and RDP werepresent, the resulting resins proved to have lower haze and higherpercent transmittance compared to examples where these additives wereabsent.

Examples 13-24

Examples 13-24 contained 30 weight percent of KK-38 and 15 weightpercent of Tuftec H1043. The ratio of KK-38 to Tuftec H1043 wasmaintained at 2 to 1 in each of the examples, but the amount of theother ingredients that were used was varied. In these samples, theaddition of benzoin at 0.3 weight percent and Arkon P125 at either 5% or10% weight percent loadings showed significant improvement in multiaxialimpact. The results are summarized in Tables 2A, 2B, and 2C.

Table 2A summarizes the results for Examples 13-16. The resin of Example13 (“Control”) was free of benzoin and Arkon P-125. The multiaxialimpact resistance of Example 13 was lower than in Example 1, where 15weight percent of KK-38 and 7.5 weight percent of Tuftec H1043 wereused. When 0.3 weight percent of benzoin was added to the resincomposition (Example 14), haze and percent transmittance improvedcompared to Example 13, but multiaxial impact resistance did not.Compared to Example 14, multiaxial impact resistance improved in Example15, where the resin contained both benzoin (0.3 weight percent) andArkon P-125 (5 weight percent) and consequently less PPE (49.7 weightpercent as compared to 55 weight percent). Increasing the amount ofArkon P-125 to 10 weight percent in Example 16 lead to a furtherimprovement in multiaxial impact resistance relative to Example 13.

TABLE 2A Effect of Benzoin and Arkon P-125 Example Number 13 14 15 16Component Weight Percent .40Iv PPE 55 54.7 49.7 44.7 KK-38 30 30 30 30.0Tuftec H1043 15 15 15 15.0 Benzoin 0.0 0.3 0.3 0.3 Arkon P-125 0.0 0.05.0 10.0 TDP 0.5 0.5 0.5 0.5 RDP 0.0 0.0 0.0 0.0 TOTAL 100 100 100 100Physical Properties Multiaxial Impact 31.4 21.2 45.7 52.6 HDT 116 114107 101 Haze 59.0 3.0 4.1 4.1 % Transmittance 77.8 83.6 83.9 84.3

Examples 17-20 are summarized in Table 2B. The resin of Example 17 wasfree of benzoin and Arkon P-125 (as in Example 13), but contained 8weight percent RDP. When 0.3 weight percent of benzoin was added to theresin composition (Example 18), haze and percent transmittance improvedcompared to Example 17, but multiaxial impact resistance did not.Compared to Example 18, multiaxial impact resistance improved in Example19, where the resin contained both benzoin (0.3 weight percent) andArkon P-125 (5 weight percent) and consequently less PPE (41.7 weightpercent as compared to 46.7 weight percent). Increasing the amount ofArkon P-125 to 10 weight percent in Example 20 lead to a furtherimprovement in multiaxial impact resistance relative to Example 13.

TABLE 2B Effect of Benzoin, Arkon P-125 and 8 Weight Percent of RDPExample Number 17 18 19 20 Component Weight Percent .40Iv PPE 47 46.741.7 36.7 KK-38 30 30 30 30 Tuftec H1043 15 15 15 15 Benzoin 0.0 0.3 0.30.3 Arkon P-125 0.0 0.0 5 10 TDP 0.5 0.5 0.5 0.5 RDP 8 8 8 8 TOTAL 100100 100 100 Physical Properties Multiaxial Impact 5.7 3.76 32.2 40.5 HDT86.8 86 80.5 75.1 Haze 26.8 2.9 4.1 3.9 Transmittance 78.8 84.6 84.983.6

Examples 21-24 are summarized in Table 2C. The resin of Example 21 wasfree of benzoin and Arkon P-125 (as in Example 17), but contained 12weight percent RDP. When 0.3 weight percent of benzoin was added to theresin composition (Example 22), haze and percent transmittance improvedcompared to Example 21, but multiaxial impact resistance did not.Multiaxial impact resistance improved in Example 23, where the resincontained both benzoin (0.3 weight percent) and Arkon P-125 (5 weightpercent) and consequently less PPE (37.7 weight percent as compared to42.7 weight percent), compared to Example 22. Increasing the amount ofArkon P-125 to 10 weight percent in Example 24 lead to a furtherimprovement in multiaxial impact resistance relative to Example 13.

TABLE 2C Effect of Benzoin, P-125, and 12 Weight Percent RDP ExampleNumber 21 22 23 24 Component Weight Percent .40Iv PPE 43 42.7 37.7 32.7KK-38 30 30 30 30 Tuftec H1043 15 15 15 15 Benzoin 0.0 0.3 0.3 0.3 ArkonP-125 0.0 0.0 5 10 TDP 0.5 0.5 0.5 0.5 RDP 12 12 12 12 TOTAL 100 100 100100 Physical Properties Multiaxial Impact 5.96 2.80 31.9 40.6 HDT 75.574.2 69.3 64.8 Haze 14.6 3.0 3.4 4.6 % Transmittance 78.8 84.7 84.7 83.4

In summary, in contrast to the resins containing 15 weight percent ofKK-38 and 7.5 weight percent of Tuftec H1043, multiaxial impactresistance was greater in resins containing 30 weight percent of KK-38and 15 weight percent of Tuftec H1043, when Arkon P-125 was present atany level, regardless of the presence of other additives, particularlybenzoin and RDP. When benzoin and RDP were present, however, theresulting resins proved to maintain low haze and high percenttransmittance.

Examples 25-51

The effects of benzoin loading versus the effect of the amount of Arkonor Clearon that was used was tested in Examples 25-51. These experimentsgenerally indicate that a higher softening point helps multiaxialimpact. The data is summarized in Table 3.

In Examples 25-33, the effect of benzoin loading versus Arkon P-125loading was explored in samples containing 25 weight percent of KK-38and 12.5 weight percent of Tuftec H1043, as well as TDP (0.5 weightpercent), and RDP (12 weight percent). At 2.5 weight percent ArkonP-125, all samples showed low multiaxial impact regardless of the amountof benzoin present (Examples 25-27). At 5 and 7.5 weight percent ArkonP-125, multiaxial impact generally improved, while haze and percenttransmittance remained relatively constant.

In Examples 34-42, the effect of benzoin loading versus Arkon P-140loading was explored. The use of the Arkon P140, with a higher softeningpoint than Arkon P-125 (140° C. versus 125° C.) helped the multiaxialimpact. At 2.5 weight percent Arkon P-140, only the 0.3 weight percentbenzoin sample showed low multiaxial impact (Example 34). As the amountof Arkon P-140 increased to 5 and then to 7.5 weight percent, all of thesamples showed significant multiaxial impact improvement at all benzoinlevels, while haze and percent transmittance remained relativelyconstant.

In Examples 43-51 the effect of benzoin loading versus Clearon P-150loading was observed. The higher softening point of Clearon P-150 (152°C.) provided overall improved multiaxial impact at all levels of ClearonP-150, independent of benzoin level while haze and percent transmittanceremained relatively constant.

TABLE 3 Example No. 25 26 27 28 29 30 31 32 33 .40Iv PPE 47.2 47 46.844.7 44.5 44.3 42.2 42 41.8 KK-38 25 25 25 25 25 25 25 25 25 TuftecH1043 12.5 12.5 12.5 12.5 12.5 12.5 12.5 12.5 12.5 Benzoin 0.3 0.5 0.70.3 0.5 0.7 0.3 0.5 0.7 Arkon P-125 2.5 2.5 2.5 5 5 5 7.5 7.5 7.5 TDP0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 RDP 12 12 12 12 12 12 12 12 12 TOTAL100 100 100 100 100 100 100 100 100 Multiaxial Impact 3.12 5.46 5.9443.3 21.8 6.9 43.3 41.4 46.7 Haze 4.8 3.7 3.5 3.5 3.4 3.5 3.6 3.6 3.8 %Transmittance 81.6 82.3 82.5 82.3 82.8 82.9 82.5 82.7 82.7 Example No.34 35 36 37 38 39 40 41 42 .40Iv PPE 47.2 47 46.8 44.7 44.5 44.3 42.2 4241.8 KK-38 25 25 25 25 25 25 25 25 25 Tuftec H1043 12.5 12.5 12.5 12.512.5 12.5 12.5 12.5 12.5 Benzoin 0.3 0.5 0.7 0.3 0.5 0.7 0.3 0.5 0.7Arkon P-140 2.5 2.5 2.5 5 5 5 7.5 7.5 7.5 TDP 0.5 0.5 0.5 0.5 0.5 0.50.5 0.5 0.5 RDP 12 12 12 12 12 12 12 12 12 TOTAL 100 100 100 100 100 100100 100 100 Multiaxial Impact 5.66 39.4 24.9 29.9 44.2 36.6 51.3 38.541.7 Haze 3.3 4.1 3.6 3.8 3.9 4.1 3.6 3.6 3.8 % Transmittance 82.6 82.682.4 82.2 82.6 82.7 82.0 82.8 82.8 Example No. 43 44 45 46 47 48 49 5051 .40Iv PPE 47.2 47 46.8 44.7 44.5 44.3 42.2 42 41.8 KK-38 25 25 25 2525 25 25 25 25 Tuftec H1043 12.5 12.5 12.5 12.5 12.5 12.5 12.5 12.5 12.5Benzoin 0.3 0.5 0.7 0.3 0.5 0.7 0.3 0.5 0.7 Clearon P-150 2.5 2.5 2.5 55 5 7.5 7.5 7.5 TDP 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 RDP 12 12 12 1212 12 12 12 12 TOTAL 100 100 100 100 100 100 100 100 100 MultiaxialImpact 35.4 28.5 34.4 54.1 53.1 51.6 51.9 49.4 48.5 Haze 4.6 3.8 3.5 3.63.8 3.7 3.9 4.4 4.3 % Transmittance 81.3 82.2 82.6 82.2 82.8 82.6 81.682.1 82.3Effect of Downstream or Upstream Addition of KK-38 and Tuftec H1043:

This experiment was designed to determine the optimal point during theprocess to add the impact modifier KK-38. All samples were prepared on aWerner Pfleiderer twin screw 30 mm extruder. The blend components were0.46 IV PPE at either 85 or 70 weight percent and KK-38 and Tuftec H1043used in a 1:1 ratio (either 7.5 weight percent or 15 weight percent eachrespectively). All three of the blend components were added at the feedthroat of the extruder (“upstream”) in half of the examples. In theother half of the examples, 0.46 IV PPE and Tuftec H1043 were addedupstream, and KK38 was added at the 6^(th) barrel of the extruder(“downstream”). Extrusion temperatures were set at 240° C., 250° C.,260° C., 260° C., 260° C. and 250° C. from feed throat to die. Theextruder was run at 350 RPM with a 40 pound/hour feed rate and fullvacuum on barrel 9.

All samples were molded on a 170 tom 8.5 oz barrel Vandorn molder.Temperatures were set at 450° F. for the barrel and 150° F. for themold. A 4.4″ shot with 0.5″ cutoff and 2′/second velocity was used. Themolded tree consisted of 2-4″×⅛″ plaques, 2 type I tensile bars, 2 Izodbars and 2½″×5″×⅛″ bars.

Table 4 summarizes the results of Examples 52-59. In Examples 52, 54,56, and 58, KK38 was added downstream. These examples showed substantialimprovement in haze compared to Examples 53, 55, 57, and 59, where KK-38was added upstream.

TABLE 4 Effect of Upstream Versus Downstream Addition KK-38 ExampleIngredient 52 53 54 55 56 57 58 59 Percent of Composition by Weight .46IV PPE 85 85 85 85 70 70 70 70 KK-38 Up 7.5 7.5 15 15 Stream KK-38 Down7.5 — 7.5 — 15 — 15 — Stream Tuftec Up 7.5 7.5 — — 15 15 stream TuftecDown — — 7.5 7.5 — — 15 15 Stream Properties Multiaxial 55.3 43.3 40.543.6 43.5 12.6 35.5 12 Impact Haze (%) 8.7 76.5 6.3 70.1 21.5 60.5 20.862.6 Light 63.8 62.1 63.6 64.6 64.3 58.6 65.7 58.3 Transmittance (%)

The foregoing invention has been described in some detail by way ofillustration and example for purposes of clarity and understanding. Theinvention has been described with reference to various specificembodiments and techniques. It should be understood that many variationsand modifications may be made while remaining within the spirit andscope of the invention. It will be obvious to one of skill in the artthat changes and modifications may be practiced within the scope of theappended claims. The above description is intended to be illustrativeand not restrictive. The scope of the invention should, therefore, bedetermined not with reference to the above description, but shouldinstead be determined with reference to the following appended claims,along with the full scope of equivalents to which such claims areentitled. All patents, patent applications, and publications cited inthis application are hereby incorporated by reference in their entiretyfor all purposes to the same extent as if each individual patent, patentapplication, or publication were so individually denoted.

What is claimed is:
 1. A composition comprising: (a) a poly(aryleneether); (b1) a radial block copolymer of an alkenyl aromatic monomer anda conjugated diene; wherein the radial block copolymer has 50 to 70weight percent of repeating units derived from the alkenyl aromaticmonomer and a number average molecular weight of 50,000 to 70,000 atomicunits; (b2) a linear block copolymer of an alkenyl aromatic monomer anda conjugated diene; wherein the linear block copolymer has 55 to 70weight percent of repeating units derived from the alkenyl aromaticmonomer; wherein the ratio of (b1) to (b2) is 0.5:1 to 4:1; (c) one ormore optical enhancing agents; and (d) a hydrocarbon resin selected fromthe group consisting of hydrogenated alicyclic hydrocarbon resins andhydrogenated terpene resins; wherein the composition is characterized byone or more of the following properties: (i) a multiaxial impact of atleast 20 J as measured by ASTM D 3763-08; (ii) a percent haze of 15percent or less as measured by ASTM D 1003-00; and (iii) a percenttransmittance of 75 percent or more as measured by ASTM D 1003-00. 2.The composition of claim 1, wherein: (a) the poly(arylene ether)comprises a poly(phenylene ether); (b1) has 65 to 70 weight percent ofrepeating units derived from the alkenyl aromatic monomer; wherein thealkenyl aromatic monomer is styrene and the conjugated diene isbutadiene; (b2) has 65 to 70 weight percent of repeating units derivedfrom the alkenyl aromatic monomer; wherein the linear block copolymer isa polystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer;and wherein the ratio of (b1) to (b2) is from 1.5:1 to 2.5:1; (c)comprises benzoin (c1) and tridecyl phosphite (c2, TDP); and (d) has asoftening point of 120 to 155° C. measured according to ASTME28-99(2009); further comprising a non-halogenated flame retardant (e)selected from the group consisting of resorcinol bis(diphenyl phosphate)(RDP) and bisphenol A bis(diphenyl phosphate) (BPADP).
 3. Thecomposition of claim 2, wherein (e) is RDP.
 4. The composition of claim2, wherein the weight percent ratio of (b1) to (b2) is 1.75:1 to 2.25:1.5. The composition of claim 2, wherein the weight percent ratio of (b1)to (b2) is 1.9:1 to 2.1:1.
 6. The composition of claim 1, wherein thepoly(arylene ether) comprises 2,6-dimethyl-1,4-phenylene ether units,2,3,6-trimethyl-1,4-phenylene ether units, or a combination thereof. 7.The composition of claim 6, further comprising (e) a flame retardant. 8.The composition of claim 7, wherein (e) is a halogenated flame retardantor a phosphorous-containing flame retardant.
 9. The composition of claim8, wherein (e) is a phosphorous-containing flame retardant selected fromthe group consisting of resorcinol bis(diphenyl phosphate) (RDP) andbisphenol A bis(diphenyl phosphate) (BPADP).
 10. The composition ofclaim 6, comprising: 30 to 60 weight percent of (a); 20 to 36 weightpercent of (b1); 10 to 18 weight percent of (b2) wherein the ratio ofweight percents of (b1) to (b2) is 1.75:1 to 2.25:1; 0.1 to 1 weightpercent of (c); and 2 to 15 weight percent of (d) wherein (d) has asoftening point of 135 to 155° C. measured according to ASTME28-99(2009), or 4 to 15 weight percent of (d) wherein (d) has asoftening point of 120 to 130° C. measured according to ASTME28-99(2009); wherein the composition has a multiaxial impact of atleast 20 J as measured by ASTM D 3763-08 and is characterized by one ormore of the following properties: (i) a percent haze of 15 percent orless as measured by ASTM D 1003-00; and (ii) a percent transmittance of75 percent or more as measured by ASTM D 1003-00.
 11. The composition ofclaim 10, further comprising (e) a flame retardant.
 12. The compositionof claim 11, wherein: (b1) has 65 to 70 weight percent of repeatingunits derived from the alkenyl aromatic monomer; wherein the alkenylaromatic monomer is styrene and the conjugated diene is butadiene; (b2)has 65 to 70 weight percent of repeating units derived from the alkenylaromatic monomer; wherein the linear block copolymer is apolystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer; and(c) is benzoin.
 13. The composition of claim 12, further comprising from0.1 to 0.6 weight percent of TDP.
 14. The composition of claim 6,comprising: 30 to 60 weight percent of (a); 12 to 36 weight percent of(b1); 6 to 18 weight percent of (b2) wherein the weight percent ratio of(b1) to (b2) is 1.75:1 to 2.25:1; 0.1 to 1 weight percent of (c); and 2to 15 weight percent of (d).
 15. The composition of claim 14, wherein(c) comprises (c1) and (c2), wherein: (c1) is an alpha-hydroxyketoneselected from the group consisting of hydroxyacetone(1-hydroxy-2-propanone; Chemical Abstracts Service (CAS) Reg. No.116-09-6), acetoin (3-hydroxy-2-butanone; CAS Reg. No. 513-86-0),2-hydroxyacetophenone (CAS Reg. No. 528-24-1), benzoin(2-hydroxy-2-phenylacetophenone CAS Reg. No. 119-53-9),2-hydroxy-1-phenyl-2-p-tolyl-ethanone (CAS Reg. No. 2431-02-9); and (c2)is a trihydrocarbyl phosphites P(OR¹¹)₃, wherein each occurrence of R¹¹is independently C₁-C₁₈ hydrocarbyl, wherein (c2) is selected from thegroup consisting of trioctyl phosphite, tridecyl phosphite, tridodecylphosphite, phenyl didecyl phosphite, decyl diphenyl phosphite, triphenylphosphite, and tritolyl phosphite.
 16. The composition of claim 14,wherein (d) has a softening point of 120 to 155° C. measured accordingto ASTM E28-99(2009).
 17. The composition of claim 16, wherein: (b1) has65 to 70 weight percent of repeating units derived from the alkenylaromatic monomer; wherein the alkenyl aromatic monomer is styrene andthe conjugated diene is butadiene; (b2) has 65 to 70 weight percent ofrepeating units derived from the alkenyl aromatic monomer; wherein thelinear block copolymer is apolystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer; and(c) is benzoin; further comprising 0.01 to 0.6 weight percent of TDP and0 to 15 weight percent of RDP.
 18. The composition of claim 15, wherein(c1) is benzoin and (c2) is selected from the group consisting oftrioctyl phosphite, tridecyl phosphite (TDP), tridodecyl phosphite,phenyl didecyl phosphite, decyl diphenyl phosphite, triphenyl phosphite,and tritolyl phosphite.
 19. The composition of claim 18, comprising 0.2to 0.9 weight percent of benzoin (c1) and 0.01 to 0.6 weight percent of(c2) wherein (c2) is TDP.
 20. The composition of claim 14, furthercomprising (e) a flame retardant.
 21. The composition of claim 20,wherein (e) is a halogenated flame retardant or a phosphorous-containingflame retardant.
 22. The composition of claim 21, wherein (e) isresorcinol bis(diphenyl phosphate) (RDP) or bisphenol A bis(diphenylphosphate) (BPADP).
 23. The composition of claim 6, wherein the ratio of(b1) to (b2) is 1:1 to 3:1.
 24. The composition of claim 23, wherein (c)comprises (c1) and (c2), wherein: (c1) is an alpha-hydroxyketoneselected from the group consisting of hydroxyacetone(1-hydroxy-2-propanone; Chemical Abstracts Service (CAS) Reg. No.116-09-6), acetoin (3-hydroxy-2-butanone; CAS Reg. No. 513-86-0),2-hydroxyacetophenone (CAS Reg. No. 528-24-1), benzoin(2-hydroxy-2-phenylacetophenone CAS Reg. No. 119-53-9),2-hydroxy-1-phenyl-2-p-tolyl-ethanone (CAS Reg. No. 2431-02-9); and (c2)is a trihydrocarbyl phosphites P(OR¹¹)₃, wherein each occurrence of R¹¹is independently C₁-C₁₈ hydrocarbyl, wherein (c2) is selected from thegroup consisting of trioctyl phosphite, tridecyl phosphite, tridodecylphosphite, phenyl didecyl phosphite, decyl diphenyl phosphite, triphenylphosphite, and tritolyl phosphite.
 25. The composition of claim 24,comprising 41.0 to 48.7 weight percent of (a); 24 to 26 weight percentof (b1); 12 to 13 weight percent of (b2), provided that the ratio of(b1) to (b2) is 1.75:1 to 2.25:1; 0.2 to 0.4 weight percent of (c1); 0.1to 0.6 weight percent of (c2); 2 to 15 weight percent of (d) wherein (d)has a softening point of 135 to 155° C. measured according to ASTME28-99(2009), or 4 to 15 weight percent of (d) wherein (d) has asoftening point of 120 to 130° C. measured according to ASTME28-99(2009); and further comprising 11 to 13 weight percent RDP; basedon a composition comprising 100 percent by weight of (a), (b1), (b2),(c1), (c2), (d), and (e), and wherein the composition has a multiaxialimpact of at least 20 J as measured by ASTM D 3763-08 and ischaracterized by one or more of the following properties: (i) a percenthaze of 15 percent or less as measured by ASTM D 1003-00; and (ii) apercent transmittance of 75 percent or more as measured by ASTM D1003-00.
 26. The composition of claim 25, wherein the ratio of (b1) to(b2) is 1.9:1 to 2.1:1.
 27. The composition of claim 26, wherein: (b1)has 65 to 70 weight percent of repeating units derived from the alkenylaromatic monomer; wherein the alkenyl aromatic monomer is styrene andthe conjugated diene is butadiene; (b2) has 65 to 70 weight percent ofrepeating units derived from the alkenyl aromatic monomer; wherein thelinear block copolymer is apolystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer; (c1)is benzoin; and (c2) is TDP.
 28. The composition of claim 24, wherein(c1) is benzoin and (c2) is selected from the group consisting oftrioctyl phosphite, tridecyl phosphite (TDP), tridodecyl phosphite,phenyl didecyl phosphite, decyl diphenyl phosphite, triphenyl phosphite,and tritolyl phosphite.
 29. The composition of claim 28, wherein thehydrocarbon resin (d) has a softening point of 120 to 155° C. measuredaccording to ASTM E28-99(2009).
 30. The composition of claim 29, furthercomprising one or more additives selected from the group consisting ofstabilizers, mold release agents, processing aids, drip retardants,nucleating agents, UV blockers, dyes, pigments, antioxidants,anti-static agents, blowing agents, mineral oil, metal deactivators,antiblocking agents, and the like, and combinations thereof.
 31. Thecomposition of claim 30, further comprising a filler selected from thegroup consisting of nanotalcs, fumed silicas, and nanoclays.
 32. Acomposition, comprising: 41.0 to 48.7 weight percent of a poly(phenyleneether); 24 to 26 weight percent of a radial block copolymer of styreneand butadiene; wherein the radial block copolymer has 65 to 70 weightpercent of repeating units derived from styrene and a number averagemolecular weight of 50,000 to 70,000 atomic units; 12 to 13 percent of alinear block copolymer of an alkenyl aromatic monomer and a conjugateddiene; wherein the linear block copolymer has 65 to 70 weight percent ofrepeating units derived from the alkenyl aromatic monomer; wherein thelinear block copolymer is apolystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer;provided that the ratio of the radial block copolymer to the linearblock copolymer is 2.25:1 to 1.75:1; 0.2 to 0.4 weight percent ofbenzoin; 0.1 to 0.6 weight percent of TDP; a hydrocarbon resin selectedfrom the group consisting of hydrogenated alicyclic hydrocarbon resinsand hydrogenated terpene resins, in an amount of 2 to 15 weight percentwherein the hydrocarbon resin has a softening point of 135 to 155° C.measured according to ASTM E28-99(2009), or in an amount of 4 to 15weight percent of wherein the hydrocarbon resin has a softening point of120 to 130° C. measured according to ASTM E28-99(2009); and 11 to 13weight percent RDP; based on a composition comprising 100 percent byweight, and wherein the composition has a multiaxial impact of at least20 J as measured by ASTM D 3763-08 and is characterized by one or moreof the following properties: (i) a percent haze of 15 percent or less asmeasured by ASTM D 1003-00; and (ii) a percent transmittance of 75percent or more as measured by ASTM D 1003-00.
 33. The composition ofclaim 32, wherein the ratio the radial block copolymer to the linearblock copolymer is 1.9:1 to 2.1:1.
 34. A process for preparing thecomposition of claim 1, comprising: (1) combining (a), (c), (b2), and(d) in the feed throat of an extruder to form a first mixture; (2)extruding the first mixture at a temperature of 220 to 280° C.; and (3)adding (b1) to the extruding mixture as it progresses from the extruderfeed throat toward the die to form a second mixture.
 35. The process ofclaim 34, wherein the first mixture further comprises (e) a flameretardant selected from the group consisting of resorcinol bis(diphenylphosphate) (RDP) and bisphenol A bis(diphenyl phosphate) (BPADP) to thefirst mixture during step (2).
 36. The process of claim 34, wherein thefirst mixture comprises: (a) a poly(arylene ether) comprising apoly(phenylene ether); (b2) apolystyrene-poly(ethylene-butylene)-polystyrene triblock copolymerhaving 65 to 70 weight percent of repeating units derived from styrene;(c) benzoin (c1) and TDP (c2); and (d) a hydrocarbon resin having asoftening point of 120 to 155° C. measured according to ASTME28-99(2009).
 37. The process of claim 34, wherein the second mixturecomprises: (a) a poly(arylene ether) comprising a poly(phenylene ether);(b1) a radial block copolymer of styrene and butadiene; wherein theradial block copolymer has 65 to 70 weight percent of repeating unitsderived from styrene; (b2) apolystyrene-poly(ethylene-butylene)-polystyrene triblock copolymerhaving 65 to 70 weight percent of repeating units derived from styrene;(c) benzoin (c1) and tridecyl phosphite (c2, TDP); (d) a hydrocarbonresin having a softening point of 120 to 155° C. measured according toASTM E28-99(2009); and (e) a non-halogenated flame retardant selectedfrom the group consisting of resorcinol bis(diphenyl phosphate) (RDP)and bisphenol A bis(diphenyl phosphate) (BPADP).
 38. The process ofclaim 37, wherein the second mixture comprises: 30 to 60 weight percentof (a); 20 to 36 weight percent of (b1); 10 to 18 weight percent of(b2); provided that the ratio of weight percents of (b1) to (b2) is inthe range of 2.25:1 to 1.75:1; 0.1 to 1 weight percent of (c1); 0.1 to0.7 weight percent of (c2); 4 to 15 weight percent of (d); and 0 to 15weight percent of (e).
 39. An article comprising the composition ofclaim
 1. 40. The article of claim 39, which is a container or aprotective covering.